Children explore Tsubaki-chō — a magical pixel art Japanese city — while AI-generated stories, lessons, and quizzes are created fresh every single visit. No two sessions are ever the same.
The city is in active development — register now and we'll contact you when the game opens.
01 · THE WORLD
One city, multiple neighborhoods — each with its own NPCs, stories, and games. Ride the train to your next adventure.
Torii gates, bamboo paths, a zen garden, and an onsen pavilion. The Kitsune Shrine Keeper, the Forest Tanuki, and the Tengu Scholar each teach through Japanese folk tales and nature stories — and tell a different story every visit.
A perpetual matsuri — ring toss alleys, takoyaki stalls, a real arcade with playable games, and a taiko stage. Kids don't feel like they're doing math. They feel like they're winning at the festival.
A bustling modern Japanese neighborhood — a school, a bakery, a corner store, and a game shop window that shows new releases every season. The baker always has new problems to solve.
Dark backstreets, overgrown shrines, and spirits with stories to tell. Spooky atmosphere, not horror — Japanese mythology and kaidan folk tales for older readers. Parent-controlled unlock in the dashboard.
Mysterious torii gates at the city's edge glow faintly. Future updates will open portals to other worlds — a European fairy tale kingdom, a French village, and beyond. The city is the foundation. The multiverse is the roadmap.
02 · A LIVING CITY
Tsubaki-chō isn't a classroom. It's a place — and like any place worth living in, it keeps getting better.
A real arcade inside the Festival Grounds. Racing games, shmups, platformers, puzzle cabinets — new releases drop seasonally. The high score board is in Japanese numerals. Reading it is optional. Beating it is not.
The City Streets game shop posts new release posters each season. Kids see what's coming before it drops. The window is always one game ahead of the arcade — and the anticipation is the point.
Tanabata lights up the Festival Grounds in June. Obon brings the Yōkai Quarter to life in October. New Year transforms the station. The city dresses for every season — and there's always a reason to come back. During the school year, daily quests tune to your child's BFT level; each summer, pacing shifts into vacation-workbook rhythm — recapping what they've mastered and previewing what's next — within the same year-round leveling system.
Every new game, every seasonal event, and every arcade drop is a push notification that says one thing: the city is alive. Summer Learning Mode — keep skills fresh all summer →
03 · GETTING STARTED
Simple for parents, magical for kids — no installs, just a modern browser.
Parent account, BFT level placement, and child profiles using nicknames only — we take child privacy seriously from the very first screen.
Your child walks through Tsubaki-chō, rides the train between districts, and meets NPCs who always have something new to say.
Race in the arcade, beat the high score, hear the Kitsune's new story, solve the festival stall puzzle. The content is fresh every visit — and the city keeps getting bigger.
04 · WHY IT'S DIFFERENT
Every other children's learning platform has a fixed content library. Kids finish it, get bored, and churn. The platform has to spend millions producing more content just to keep up.
Book Fairy Tales generates fresh stories, comprehension questions, math problems, and cultural riddles on every visit — powered by Claude AI. The Kitsune Shrine Keeper tells a different folk tale every time your child visits. The festival math stall has new problems every session.
Same NPC. Different story. Every visit. Forever.
05 · FOR PARENTS
Trust is part of the product — not an afterthought.
Parent accounts are created first. Child profiles use nicknames only — never full names. Verifiable consent is built into every step of registration.
Every AI-generated story and quiz your child sees is logged in your parent dashboard. Review any session, any time — full transparency on what the AI produced.
No advertising. No in-app purchases. No behavioral tracking. One subscription covers everything — no surprise charges.
Lock or unlock districts by age, adjust BFT level and pacing, set individualized difficulty, and review weekly session summaries from your dashboard.
06 · PRICING
Confirmed at checkout when subscriptions go live. No payment required to register.
Billed monthly · cancel anytime
That's $6.58/month
No payment required to start
We're finishing the Shrine Quarter first. Register now and we'll email you the moment the city opens its gates.
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