A salaryman loses his life trying to save a child, but instead of dying, he is granted a second chance. He awakens in a fantasy world as a boy named Rain, and his saviors are two of the most formidable beings in this realm, the legendary Sword Saint and the unparalleled Sage, both of whom are beautiful women. Under the direct tutelage of these two fearsome masters, Rain grows up absorbing their immense combat skills and magical knowledge, becoming an extraordinarily powerful individual from a young age. However, Rain himself remains completely unaware of just how far above the norm his abilities truly are. The story follows his enrollment at a prestigious academy where his oblivious yet overwhelming power leads him to unknowingly dominate every challenge, from academic trials to deadly threats, all while he believes he is just an ordinary student navigating school life. The narrative focuses on Rain's comedic and action-packed journey as he effortlessly overcomes rivals and dangerous situations without ever realizing his own cheat-level strength.