The short version: I found a notebook I wrote in junior high, and I turned it into an app. Like a lot of kids, I filled a notebook with an entire "magic system" — twelve zodiac spells, solar arts, seal-curses, ranks you earn by casting. Pure chuuni. I forgot about it for decades. When I found it again, I didn't cringe. I thought: this deserves to actually exist. So Kaikoku is an antique pocket watch that lives in your palm. The chain swings on real physics. You snap the hunter lid shut and power gathers; open it and the day unseals. By night you wind the dial to cast one of twelve arcana; by day the sun answers with solar arts instead. Every hour it checks its keeper by Face ID — strangers just get a magic circle. Underneath all of that, it's a genuinely functional clock: alarms with six bells, an hourglass timer, a chronograph with Live Activities, an Apple Watch companion, widgets, and StandBy. The fantasy is the skin; the timekeeping is real. Everything — every spell, art, and bell — is free. Ads keep the watch wound, and you can silence them forever with a one-time Pact if you like. I'd love your honest feedback, especially from anyone who also kept one of those notebooks. What would your junior-high self have added? 🕰️

Kaikoku — Thou Shalt Set the Hour Free

A chuuni pocket-watch alarm from a real childhood notebook

A chuuni pocket-watch alarm from a real childhood notebook