He died with a thousand regrets. The universe gave him one more morning.

Haruto Matsumoto wakes up in a white void, then in his old bedroom, eighteen years old again. No fantasy kingdom. No cheat skill. No status screen. Just his mother's tired smile, a school full of people he once ignored, and the girl he never had the courage to talk to.

He has the mind of a thirty-four-year-old and the sarcastic jokes to prove it. But when the humor goes quiet, the real questions come out: what do you do with a second chance when the universe refuses to give you a shortcut?

A Half-Second Too Late: Rewound is a funny, heartfelt, isekai-inspired regression story about regret, family, friendship, first love, and the small choices that change everything.

Inside Volume 1:
- Seven chapters of second-chance drama, plus the bonus side story "Extra Marks"
- Black-and-white light novel style illustrations
- Sarcastic, self-aware narration that turns serious when it counts
- A cliffhanger ending that leads into Volume 2

Perfect for readers of reincarnation and rebirth stories, second-chance fiction, high school drama, slow-burn school romance, coming-of-age fantasy, and light novel and web novel storytelling.

Content note: this story deals with grief, depression, and thoughts of suicide.