"Why must this happen... Why can't I be happy... I have failed myself... I have regretted so much..."

Those were Keito Kirishima's despairing words as he stood precariously on the bridge railing, the dark water below mirroring his bleak outlook.

Succumbing to his overwhelming emotions, he jumped. The cold embrace of the water consumed him, and darkness claimed his consciousness.

However, instead of the oblivion he expected, he wakes up disoriented in a familiar place – his old bedroom. Unbeknownst to him, the plunge into the water wasn't the end, but a strange twist of fate that has sent him back to the past, offering a chance he never thought possible.