Ren Takahashi is a professional underachiever and amateur daydreamer, constantly fumbling through high school with awkward conversations, unfinished homework, and hopeless crushes. But all of that changes the day he stumbles upon a malfunctioning time machine hidden in an old lab. Suddenly, Ren has the ultimate cheat code for life: the ability to rewrite his past.

At first, it’s perfect—
Missed assignments? Fixed.
Embarrassing moments? Erased.
Lost bets? Won before they even started.
And most importantly, Hana Nishimura, the girl of his dreams, finally starts noticing him.

But the universe has other plans.

Each jump back in time creates cracks in the timeline, causing reality to shift in unpredictable ways. Players change mid-game, conversations take strange turns, and people Ren once knew seem slightly… off. With every adjustment, the present slips further from the future he thought he was building.