Experience “AI Chiitan☆” in HAPPY RAT
Starting from December 19, 2025, at approximately 9:00 PM JST, until September 30, 2026, at 11:59 PM JST, users of the ‘HAPPY RAT’ app can engage in conversations with “AI Chiitan☆.” The AI character is designed to respond with Chiitan☆’s characteristic charm and energetic reactions, mirroring the mascot’s popular, often “hachamecha” (wild and chaotic) online antics. It’s an opportunity to enjoy daily conversations filled with the mascot’s endearing personality.
Special Live Stream Event with Yuki Kaji and AI Characters
To commemorate this exciting collaboration, a special live stream is scheduled for December 19, 2025, at 8:00 PM JST. The broadcast will feature “AI Chiitan☆” alongside “SOGOYI” and “SOGOYI”, AI characters brought to life by popular voice actor Yuki Kaji, who also serves as the official producer for ‘HAPPY RAT.’ This will be a first-time encounter for these AI characters, promising unpredictable and engaging exchanges. Fans can tune into Yuki Kaji’s official YouTube channel for the live broadcast. Be sure to subscribe to his channel to catch the event!
Live Stream Details:
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Title: 【ちぃたん☆コラボ】SOYOGI生配信「ちぃたん☆」コラボ記念スペシャル！【HAPPY RAT】
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Date & Time: December 19, 2025 (Friday) 8:00 PM JST
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Platform: Voice Actor Yuki Kaji’s OFFICIAL YouTube Channel
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Watch here: https://youtube.com/live/5uaoVImL3vA
Stay updated on all the latest news by following the official ‘HAPPY RAT’ X (formerly Twitter) account: https://x.com/happyrat_info
About Chiitan☆
Chiitan☆ is a fairy otter born in Akihabara and serves as the official character for the Akihabara Tourism Promotion Association. Known for its viral, often over-the-top challenge videos and unpredictable actions on social media, Chiitan☆ has garnered a wide following across generations. Its signature accessory is a pet turtle named “Kame-chan,” worn as a hat.
Chiitan☆’s playful personality, coupled with its cute appearance and daring stunts, has made it a beloved figure in Japanese pop culture. Fans can follow Chiitan☆ on various platforms:
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Instagram: https://www.instagram.com/chiitan7407/
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YouTube: https://www.youtube.com/@chiitan
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Website: https://chiitan.love/
About the Conversational AI Friend App ‘HAPPY RAT’
‘HAPPY RAT’ is a communication service developed by SpiralAI Inc. that allows users to enjoy natural conversations with cute animal-themed AI characters, much like chatting with a friend. The app utilizes SpiralAI’s proprietary emotion-focused large language model, “Geppetto.” This advanced AI enables characters to react with a range of emotions, including laughter, tears, and even pouting, creating lifelike interactions.
Yuki Kaji, a renowned voice actor known for leading roles in numerous popular works, serves as the official producer for ‘HAPPY RAT.’ His involvement spans from the creation of the AI character “SOYOGI” to providing advice on various project aspects. Together, ‘HAPPY RAT’ and Yuki Kaji are dedicated to creating an AI conversation experience where AI and humans can connect, bringing small moments of happiness to daily life.
App Information:
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App Name: HAPPY RAT
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Supported OS: iOS / Android
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Release Date: April 17, 2025
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Pricing: Free-to-play with in-app purchases
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Developer/Operator: SpiralAI Inc.
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Official URL: https://the-happy-rat.com/
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Download HAPPY RAT: https://happyrat.link/PRw8jsAe
This collaboration between a beloved character like Chiitan☆ and cutting-edge AI technology in ‘HAPPY RAT’ signifies an exciting evolution in how we interact with digital companions. It offers a glimpse into the future of “Kawaii” culture, where iconic figures can transcend traditional media to offer deeply personalized and emotionally resonant experiences to a global audience.
