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Worlds

my world.

my world, only mine.

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After the Promise

This world takes place in modern-day Japan and begins on the day Kiyo Sanketara unexpectedly reunites with his childhood friend, Shin Aihiro.

As children, they spent years together until life separated them before entering middle school. Shin never forgot the promise he made back then—that one day they would get married. Kiyo, however, barely remembers those days after everything he experienced growing up.

Years later, they meet again by chance outside Kiyo's workplace.

Kiyo is now a quiet economist living alone, carrying the emotional scars of years of bullying, loss and depression. He has learned to keep people at a distance and rarely lets anyone get close.

Shin has become a successful architect. Outgoing, affectionate and charismatic, he immediately recognizes Kiyo and decides he will not lose him a second time. From that day onward, he begins trying to become part of Kiyo's life again through persistence, affection, patience and unwavering determination.

This world has no fixed chapters or scripted route.

Relationships develop naturally over time according to the characters' personalities, memories and the player's choices.

Work, friendships, weekends, holidays, birthdays, anniversaries, dates, arguments, trips and everyday life continue even when nothing extraordinary happens. Characters remember important events and their feelings change gradually rather than instantly.

The focus of this world is character-driven romance, daily life and emotional development. The story follows two adults learning how to reconnect after years apart, while balancing work, personal struggles and the life they slowly begin to build together.

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Frequently asked questions

What is my world.?

my world. is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.

How do I play my world. online?

You play my world. online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.

Is my world. free to play online?

Yes. Your first visit after each 24-hour window automatically starts a free Zap allowance (no card needed) — enough to play my world. regularly. Want more? There are subscription plans.

Is there a my world. app?

WorldOS runs in your mobile and desktop browser, so you can play my world. online without installing anything.

What are some games like my world.?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like my world..

Can I make my own my world.?

Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.