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Sanrio Character Groups, Duos & Ensemble Units
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Read Article →Maimaimaigoen at a Glance
Official Name
Maimaimaigoen
Japanese Name
まいまいまいごえん
Official Styling
MAIMAIMAIGOEN
Debut & Launch
November 11, 2021
Entity Type
Multimedia Ensemble / Story Project
Core Cast
16 Children
Main Caregiver
Okada Yuu (岡田ユウ)
Senior Caregiver
Rumi-sensei (ルミ先生)
Primary Nursery
Ajisai Nursery (あじさい保育園)
Mystery Setting
Yuuropia (ゆぅろぴあ)
Core Media
Steam Game, Manga, Music Videos
Single Birthday
None (Character-Specific)
2026 Ranking
#64 Worldwide (Entry No. 47)
2025 Ranking
#47 Worldwide (Entry No. 35)
2024 Ranking
#35 Worldwide (Entry No. 33)
Status
Active (Steam, Manga & Rankings)
What Is Maimaimaigoen?
Maimaimaigoen (まいまいまいごえん) is an innovative multimedia storytelling ensemble introduced by Sanrio on November 11, 2021. Unlike traditional Sanrio properties centered around a single cute animal mascot, Maimaimaigoen is a character-driven narrative project following sixteen distinct kindergarten children and two nursery caregivers who find themselves trapped in an uncanny, deserted amusement park named Yuuropia.
Developed simultaneously across video games, serialized manga, and animated collaboration music videos, the project explores the complex emotional dynamics of childhood, interpersonal growth, and moral choices under intense, suspenseful circumstances.
Project Theme: “Growing Pains of the Heart”
The overarching conceptual theme of Maimaimaigoen is officially described as “growing pains of the heart” (心の成長痛, kokoro no seichōtsū). The narrative focuses on how individual strengths, personal flaws, insecurities, and relationships are tested when everyday safety is removed.
Rather than relying on simplistic good-versus-evil tropes or pure horror shock value, Maimaimaigoen weaves deep emotional tension with psychological nuance. The children must confront their own vulnerabilities, overcome misunderstandings, and learn cooperation to navigate the surreal challenges of Yuuropia.
Story Premise & The Sanrio Puroland Excursion
The story begins during an exciting day trip: the children of Ajisai Nursery, accompanied by rookie teacher Okada Yuu and experienced supervisor Rumi-sensei, embark on a fun field trip to Sanrio Puroland.
However, on their way home, the group encounters an inexplicable anomaly. Instead of returning to their familiar neighborhood, they regain consciousness inside Yuuropia (ゆぅろぴあ)—a massive, bizarre amusement park with weathered attractions, locked exits, and no other humans in sight.
Yuuropia & The Enigmatic Kaerutamago
Yuuropia is the central setting of the story: a closed, surreal theme park where every attraction functions as an interactive trial tailored to the children's personalities and emotions. To find a way back home, the group must explore different zones and challenge these enigmatic attractions.
Within the park resides Kaerutamago (カエルタマゴ), a mysterious creature resembling a hybrid frog-egg mascot. Kaerutamago acts as the park's master of ceremonies, explaining the rules of the attractions and the necessity of collecting special medals to unlock new areas. Rather than functioning as a direct combative villain, Kaerutamago is an ambiguous facilitator whose true motives are gradually unraveled across the game and manga.
Visual Gallery: Maimaimaigoen's World
Explore thematic visual moments reflecting the charm, gentle character connections, and reflective storytelling aesthetic of Maimaimaigoen:
1. Main Character Portrait
2. Cheerful Greeting
3. Garden Path Stroll
4. Field Flower Bouquet
5. Ajisai Hydrangea Wish
6. Storybook & Sleeping Cat
7. Petal Wind Dance
8. Summer Wind Chimes
Meet the 16 Children of Ajisai Nursery
The core ensemble consists of 16 kindergarteners, each designed with distinct visual motifs, individual birthdays, and unique personality traits:
Shinta (シンタ)
🎂 Aug 31A bright, proactive boy who impulsively charges forward to protect his friends, although he harbors an underlying sensitive and timid side.
Hikaru (ヒカル)
🎂 May 12A calm, dependable boy with strong communication skills who naturally steps into leadership and organizing roles among the children.
Daigorou (ダイゴロウ)
🎂 Jul 21An energetic, hearty boy with a healthy appetite who keeps the group's spirits lifted as a natural mood-maker.
Kanata (カナタ)
🎂 Sep 9A gentle, introspective boy who is deeply attached to his beloved stuffed animal Hinata, holding it close wherever he goes.
Hayate (ハヤテ)
🎂 Oct 20A cool, lone-wolf boy who maintains emotional distance and tends to analyze critical survival challenges like video games.
Zoya (ゾーヤ)
🎂 Dec 19A quiet, observant boy with an enigmatic demeanor who notices subtle environmental clues and character behaviors.
Lion (ライオン)
🎂 May 3A mature, reserved girl who demonstrates exceptional academic and physical capability. She is the protective older sister of Lime.
Lime (ライム)
🎂 Jul 9A cheerful, innocent, and somewhat clumsy girl with an honest heart. She is the younger sister of Lion and looks up to her sister deeply.
Maria (マリア)
🎂 Mar 25An affectionate, expressive girl who loves taking care of others and can take surprisingly bold, decisive action when necessary.
Yuzuriha (ユズリハ)
🎂 Jan 6A self-assured girl dedicated to personal fashion and beauty standards who can occasionally display a selfish, willful streak.
Madoka (マドカ)
🎂 Nov 4A high-spirited, enthusiastic girl who constantly carries her toy camera, seeking to capture and preserve memories with her friends.
Mamoru (マモル)
🎂 Apr 20A serious, studious boy with a vast repository of general knowledge who prioritizes safety and strictly avoids risky situations.
Rinrin (リンリン)
🎂 Feb 16A girl whose sharp words and tough appearance conceal a deeply compassionate, protective nature toward younger children.
Wataru (ワタル)
🎂 Jun 14A peaceful, smiling boy who loves company and frequently tags along with Shinta, enthusiastically mimicking his actions.
Daiya (ダイヤ)
🎂 Dec 25An easygoing, amiable boy who prefers communicating through expressive facial gestures and physical hand signals.
Aki (アキ)
🎂 Nov 23A dramatic, artistic girl with a passion for creative expression who often communicates with grand, theatrical flair.
Caregivers & Nursery Staff
Okada Yuu (岡田ユウ)
🎂 Jan 14A kind-hearted rookie childcare worker who genuinely cares for the children, but often feels overwhelmed when required to make difficult choices under pressure.
Rumi-sensei (ルミ先生)
🎂 Mar 9An experienced, dependable senior teacher at Ajisai Nursery who is widely respected and trusted by students, parents, and fellow educators.
Maimaimaigoen Game by Kanawo (Steam & Web)
The video game adaptation of Maimaimaigoen is a cornerstone of the multimedia franchise. Supervised by Sanrio and developed with game design and scenario direction by Kanawo (カナヲ), the story-driven adventure game immerses players in the eerie atmosphere of Yuuropia.
Players navigate puzzle-filled attractions, manage group trust, and experience branch storylines. The game is officially available worldwide on Steam as well as Japanese freeware gaming platforms.
Official Game Chapters
Chapter 1: Welcome to Yuuropia (ゆぅろぴあへようこそ)
Chapter 2: Promise and Crayon (約束とクレヨン)
Chapter 3: The Children's Separation (子どもたちの別れ)
Chapter 4: Feelings to Send (届けたい想い)
Chapter 5: The Thing Connecting You and Me (君と僕をつなぐもの)
Chapter 6: Scarlet Mask (スカーレット・マスク)
Chapter 7: Lost Path (迷い子のゆくえ)
Official Manga by Yakan Nabeya (Young Ace UP)
Maimaimaigoen is serialized as an official manga on KADOKAWA's digital platform Young Ace UP. With original concept and supervisory oversight by Sanrio, the manga is illustrated with striking emotional depth by manga artist Yakan Nabeya (鍋谷やかん).
The manga explores character backstories, psychological tensions, and detailed events during their entrapment in Yuuropia. KADOKAWA has published 4 collected tankōbon volumes to date:
- Volume 1: Released June 3, 2022 (KADOKAWA)
- Volume 2: Released March 3, 2023 (KADOKAWA)
- Volume 3: Released March 4, 2024 (KADOKAWA)
- Volume 4: Released December 4, 2024 (KADOKAWA)
Official Collaboration Music Videos & Songs
Music is an integral storytelling pillar of Maimaimaigoen. Sanrio collaborates with leading Japanese music producers and Vocaloid artists to produce dedicated tie-in animated music videos:
- Carnival Happy (カーニバルハッピー): Created by renowned producer Kairiki Bear feat. Hatsune Miku, capturing the chaotic, dizzying atmosphere of Yuuropia.
- Baby Days (ベイビーデイズ): Produced by popular creator Chinozo, highlighting the bittersweet nostalgia and innocence of early childhood.
- Wolf Wald (ウルフワルド): Composed by *Luna, delivering high-energy emotional intensity and dramatic character themes.
- Additional Collaborations: Songs and video projects developed with acclaimed creators such as Hiiragi Kirai and more.
Media Clarification: While the project features animated music videos and game cutscenes, no dedicated television anime broadcast series or theatrical feature film has been produced.
Sanrio Character Ranking History & 2026 Results
Since debuting in the annual worldwide Sanrio Character Ranking in 2022, Maimaimaigoen has maintained an active, passionate international fanbase:
| Year | Entry Number | Final Rank | Contest Notes & Highlights |
|---|---|---|---|
| 2022 | No. 78 | #57 | Impressive debut ranking following the project's late-2021 launch |
| 2023 | No. 56 | #34 | Major leap into the Top 35 propelled by game chapter releases |
| 2024 | No. 33 | #35 | Strong consecutive Top 35 performance worldwide |
| 2025 | No. 35 | #47 | Solid global ranking (corrected from erroneous legacy #84 roster bug) |
| 2026 | No. 47 | #64 | Official 2026 Final Worldwide Rank in the Sanrio Character Ranking |
Myths & Misconceptions: Maimaimaigoen Facts
“Maimaimaigoen debuted in 1985.”
Maimaimaigoen debuted on November 11, 2021. The “1985” date was an erroneous legacy database error.
“Maimaimaigoen is a single cute mascot character.”
It is an ensemble multimedia narrative project centered on 16 children, two teachers, and the mysterious world of Yuuropia.
“Kaerutamago is simply the villain.”
Kaerutamago is an enigmatic park guide and trial facilitator with complex story significance, not a simple cartoon villain.
“Lion and Lime are just classmates.”
Lion and Lime are biological sisters (Lion is the older sister; Lime is the younger sister).
“Maimaimaigoen ranked #84 in 2025.”
Maimaimaigoen entered 2025 as Entry No. 35 and finished at #47 Worldwide. “#84” was an internal encyclopedia index bug.
“The music videos mean Maimaimaigoen has a TV anime.”
No dedicated TV anime series or movie exists; animated content is produced as official collaboration music videos and promotional shorts.
Frequently Asked Questions About Maimaimaigoen
Explore comprehensive verified answers to all questions regarding Maimaimaigoen's story, 16 children cast, game, manga, music, and ranking history:
1. Identity, Concept & Launch
What is Maimaimaigoen?
Maimaimaigoen (まいまいまいごえん) is an official Sanrio multimedia story and ensemble project launched in 2021. It follows 16 nursery school children and their caregivers from Ajisai Nursery who become lost and trapped in the mysterious amusement park Yuuropia.
Is Maimaimaigoen an official Sanrio property?
Yes. Maimaimaigoen is a genuine, officially registered Sanrio multimedia intellectual property created and copyrighted by Sanrio Co., Ltd.
What is Maimaimaigoen called in Japanese?
In Japanese, the property is written in hiragana as まいまいまいごえん (Maimaimaigoen) and officially styled in Latin script as MAIMAIMAIGOEN.
When did Maimaimaigoen debut?
Maimaimaigoen officially debuted in 2021, with its major multimedia project launch taking place on November 11, 2021.
Did Maimaimaigoen debut in 1985 or 2021?
Maimaimaigoen debuted in 2021. The '1985' date was an erroneous legacy database error that has been corrected across this encyclopedia.
Was Maimaimaigoen launched on November 11, 2021?
Yes. November 11, 2021 was the official public launch date of the project across Sanrio web, manga, game, and music video channels.
Is Maimaimaigoen one character or a group?
Maimaimaigoen is not a single mascot character; it is an ensemble multimedia story project featuring 16 distinct children, two teachers, and unique park entities.
How many children are in Maimaimaigoen?
The core child cast consists of exactly 16 nursery children from the Ajisai Nursery class.
2. Setting, Story & Theme
What is Ajisai Nursery?
Ajisai Nursery (あじさい保育園) is the kindergarten attended by the 16 children and where teachers Okada Yuu and Rumi-sensei work.
What is Yuuropia?
Yuuropia (ゆぅろぴあ) is the mysterious, weathered amusement park where the children and their teachers become trapped after their field trip.
Why are the children trapped in Yuuropia?
While returning from a field trip excursion to Sanrio Puroland, the group becomes lost in a bizarre phenomenon and awakens trapped inside Yuuropia, forced to challenge its attractions to find a way home.
What is the core theme of Maimaimaigoen?
The project's central theme is 'growing pains of the heart' (心の成長痛), exploring emotional growth, individuality, moral dilemmas, personal conflict, and cooperation under suspenseful circumstances.
Who is Kaerutamago?
Kaerutamago (カエルタマゴ) is the mysterious frog-egg mascot and guide of Yuuropia who communicates the park's rules, attraction conditions, and medal collection mechanics.
Is Kaerutamago the villain?
Kaerutamago is an enigmatic facilitator and park entity rather than a stereotypical cartoon villain, presenting complex challenges tied to the children's emotional trials.
3. The 16 Children Cast
Who is Shinta?
Shinta (シンタ, born Aug 31) is a bright, energetic boy who charges forward courageously, though he also harbors a sensitive, timid side.
Who is Hikaru?
Hikaru (ヒカル, born May 12) is a calm, dependable boy who often acts as an organizer and natural leader among the children.
Who is Daigorou?
Daigorou (ダイゴロウ, born Jul 21) is a lively, food-loving boy with a big appetite who serves as the group's energetic mood-maker.
Who is Kanata?
Kanata (カナタ, born Sep 9) is a gentle, quiet boy who is never seen without his cherished stuffed animal Hinata.
Who is Hayate?
Hayate (ハヤテ, born Oct 20) is a cool, lone-wolf boy who approaches dangerous situations like strategic video games.
Who is Zoya?
Zoya (ゾーヤ, born Dec 19) is a quiet, observant, and mysterious boy who notices subtle details that others overlook.
Who is Lion?
Lion (ライオン, born May 3) is a reserved, highly capable girl who excels academically and physically, and is the older sister of Lime.
Who is Lime?
Lime (ライム, born Jul 9) is a cheerful, straightforward, and slightly scatterbrained girl, and the younger sister of Lion.
Are Lion and Lime sisters?
Yes. Lion and Lime are biological sisters (Lion is the older sister, Lime is the younger sister).
Who is Maria?
Maria (マリア, born Mar 25) is an affectionate, caring girl who is surprisingly bold and proactive in taking initiative.
Who is Yuzuriha?
Yuzuriha (ユズリハ, born Jan 6) is a fashion-conscious girl who works hard for beauty and style, though she can occasionally be selfish.
Who is Madoka?
Madoka (マドカ, born Nov 4) is a high-energy girl who loves documenting moments and is always carrying her camera.
Who is Mamoru?
Mamoru (マモル, born Apr 20) is a serious, intellectual boy with extensive knowledge who is cautious and avoids unnecessary danger.
Who is Rinrin?
Rinrin (リンリン, born Feb 16) is a girl with an intimidating, sharp appearance who actually possesses a deeply caring and protective heart.
Who is Wataru?
Wataru (ワタル, born Jun 14) is a gentle boy who is always smiling and frequently imitates and follows Shinta.
Who is Daiya?
Daiya (ダイヤ, born Dec 25) is an easygoing, friendly boy who communicates expressively through gestures and body language.
Who is Aki?
Aki (アキ, born Nov 23) is a creative, artistic girl with a theatrical flair who expresses herself through dramatic, exaggerated gestures.
4. Caregivers & Nursery Staff
Who is Okada Yuu?
Okada Yuu (岡田ユウ, born Jan 14) is a rookie childcare worker at Ajisai Nursery who is cheerful and caring, but struggles when forced to make difficult, high-stakes decisions.
Who is Rumi-sensei?
Rumi-sensei (ルミ先生, born Mar 9) is a senior, experienced childcare worker at Ajisai Nursery who is deeply dependable and trusted by children, parents, and colleagues.
5. Birthdays, Age & Relationships
What are the Maimaimaigoen characters' birthdays?
Each character has an individual birthday (e.g. Shinta: Aug 31, Hikaru: May 12, Lion: May 3, Lime: Jul 9, Yuu: Jan 14, Rumi: Mar 9). There is no single property-wide birthday.
How old are the children?
The children are kindergarten/nursery school age in Ajisai Nursery, but Sanrio does not assign fixed numerical human birth years.
Who are their friends?
The canonical peer relationships exist within the 16 children and their teachers at Ajisai Nursery, rather than unrelated external Sanrio characters.
Are there romantic relationships in Maimaimaigoen?
No canonical romantic relationships or official dating pairs exist; the story focuses on friendship, trust, emotional conflict, and family bonds.
6. Game, Chapters & Steam
Is Maimaimaigoen a game?
Yes. Maimaimaigoen features an official story-driven adventure RPG game that serves as a core media pillar of the project.
Who made the Maimaimaigoen game?
The game is officially produced by Sanrio with game development and scenario design created by Kanawo (カナヲ).
How many game chapters are there?
The official storyline comprises seven major chapters: 1. Welcome to Yuuropia, 2. Promise and Crayon, 3. The Children's Separation, 4. Feelings to Send, 5. The Thing Connecting You and Me, 6. Scarlet Mask, and 7. Lost Path.
Is Maimaimaigoen on Steam?
Yes. Maimaimaigoen is officially available on Steam as a downloadable adventure game in addition to web browser freeware editions.
7. Manga, Publication & Volumes
Is Maimaimaigoen a manga?
Yes. Maimaimaigoen is serialized as an official manga supervised by Sanrio.
Who draws the manga?
The manga is illustrated by Yakan Nabeya (鍋谷やかん) with original concept and supervision by Sanrio.
Where is the manga published?
The manga is serialized online on KADOKAWA's Young Ace UP platform.
How many manga volumes are there?
KADOKAWA has published 4 collected tankōbon manga volumes (Volume 1 in June 2022, Volume 2 in March 2023, Volume 3 in March 2024, and Volume 4 in December 2024).
8. Music, Songs & Animation
Does Maimaimaigoen have songs?
Yes. The project features official tie-in vocaloid and producer collaboration songs and animated music videos.
What is Carnival Happy?
Carnival Happy (カーニバルハッピー) is an official tie-in theme song created by Kairiki Bear feat. Hatsune Miku for Maimaimaigoen.
What is Baby Days?
Baby Days (ベイビーデイズ) is an official project tie-in song produced by popular creator Chinozo.
What is Wolf Wald?
Wolf Wald (ウルフワルド) is an official tie-in collaboration song composed by music producer *Luna.
Is Maimaimaigoen an anime?
No dedicated television anime series has been produced; animated content consists of official music videos, promotional shorts, and game sequences.
Is there a Maimaimaigoen movie?
No. There are no theatrical movies or feature-length films for Maimaimaigoen.
9. Ranking History & Current Status
What was Maimaimaigoen's 2022 rank?
In the 2022 Sanrio Character Ranking, Maimaimaigoen entered as No. 78 and finished at #57 Worldwide.
What was its 2023 rank?
In the 2023 contest, Maimaimaigoen entered as No. 56 and achieved a standout rank of #34 Worldwide.
What was its 2024 rank?
In 2024, Maimaimaigoen entered as No. 33 and finished at #35 Worldwide.
What was its 2025 entry number and final rank?
In the 2025 Sanrio Character Ranking, Maimaimaigoen was Entry No. 35 and placed at #47 Worldwide (correcting an erroneous #84 roster bug).
What was its 2026 entry number and final rank?
In the 2026 Sanrio Character Ranking, Maimaimaigoen entered as Entry No. 47 and finished at #64 Worldwide.
Is Maimaimaigoen still active?
Yes. Maimaimaigoen is an actively supported Sanrio property with ongoing manga volumes, game updates on Steam, Character Ranking participation, and official goods.
Official Sources & Verification References
The information on this page is cross-referenced directly against primary official Sanrio corporate, project, publisher, and gaming documentation:
- Official Sanrio Japan Profile: Sanrio.co.jp Maimaimaigoen Character Page (Canonical 2021 debut and project overview).
- Official Maimaimaigoen Portal: Official project website (16 children cast profiles, Ajisai Nursery lore, and Yuuropia settings).
- KADOKAWA Young Ace UP: Official manga serialization catalog and collected tankōbon volume release listings by Yakan Nabeya.
- Steam Store Portal: Official Maimaimaigoen adventure game listing by Sanrio / Kanawo.
- Sanrio Character Ranking Archives: Official worldwide contest results (2022 #57, 2023 #34, 2024 #35, 2025 #47, 2026 #64).
