Mujaki no Rakuen

Shouta is a twenty-five-year-old NEET whose life has stalled completely. When he attends his school reunion, the stark contrast between his stagnant existence and the achievements of his former female classmates becomes painfully clear. Rather than offering sympathy, these now-successful women openly mock him, leaving Shouta humiliated and deeply regretful of the path his life has taken. However, everything changes following a bizarre and mysterious incident at the school pool. Instead of drowning in his failures, Shouta is unexpectedly thrown back through time. He awakens not as an aimless adult, but in an era when his mocking peers were merely fifth-grade girls. Armed with the mind of a twenty-five-year-old and the foresight of someone who has already witnessed their futures, Shouta is presented with an unprecedented second chance. The dynamic between him and his former classmates is entirely reset, allowing him to interact with them long before they became the successful women who looked down on him. Now, he must navigate this strange new reality, dealing with these young girls while grappling with the surreal opportunity to rewrite his own disappointing destiny.