ChronoClock

Rei Sawatari has quietly spent his school years confessing to cute girls on a list he compiled—gauging their reactions, then using his pocket watch to rewind time and move on, taking no risks and accumulating no consequences. The system works until the day he witnesses what he thinks is a girl falling to her death from the school rooftop. When he reverses time and races up to see what really happened, he finds first-year student Suzuki Miu in the middle of confessing her feelings to his best friend—and catches her at the worst possible moment. Her determination moves him in a way his system was not built to handle. He decides to use his power to help her second confession succeed instead. This is the beginning of a much more complicated pocket watch story.