© 2026

Japanese, English, Simplified Chinese, Traditional Chinese
Welcome to a puzzle game where your goal is to guide young souls to peace. Set in Sai no Kawara, a hell for children, you’ll stack the divine toy "Gift" bestowed by the gods. Discover their memories and the stories they left behind.
**──**I'm... really bad at this program.
So, um, if it's okay with you... could you maybe do it for me instead?
The more puzzles you clear, the more lifespan I get for my next life!
Through a strange, eerily glowing device, you meet a certain child.
This child is in a corner of hell, the place where children who died young end up. There, they must take on a Reincarnation Ethics Program called "Children's Garden," and the better they perform, the more lifespan they can earn for their next life — or so they're told.
Being bad at the program, this child can only ever earn a little lifespan, and so they die young and return to that hell again and again. To break free of this cycle, the child asks you for help.
In the Japanese folktale "Sai no Kawara," children who die young drift to a riverbank, where they are made to suffer — building towers of stones only for demons to knock them down.
In the "Reincarnation Ethics Program," you take on puzzles built around this motif of "stone-stacking." In place of stones, you tackle a variety of missions using toys called "Onbut."
Onbut come with all sorts of properties — some are sticky, some explode — and the missions vary just as much: "stack them on an unstable stage," "stack them to a set height," and more. Clearing missions earns you more lifespan for the next life.
Meanwhile, the device holds all kinds of reports and footage. By spending the "next-life lifespan" you earned in the "Reincarnation Ethics Program," you can read classified reports.
There you'll find information to give you an edge on missions, detailed data on the child who came to you for help, and secrets about how this world truly works....
Will you be able to win the child the "next life" they wish for?
Staff List
Planning: KENKOH-KIKOH
Direction and General Management: Shishikura Shishinobu
Visual Materials Production, Backgrounds, UI Design: Jun Osato
System Engineer: Keita Kanai
Sound Effects, BGM Production: Kiyoshi Hori
Illustrations and Partial Animations: Shuu Yonezawa
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