Kimi to Ita Mirai no Tame ni ~ I'll be back 1999 saison 01 episode 01

A college senior who suddenly dies returns to life four years earlier, and, with full memory of his future, attempts to correct past mistakes and realize that previously unaccomplished goals, only to die and be reborn again and again. Though the circumstances are different each time, he encounters people who form a common connecting thread.