Saikyou no Kensei to Kenja no Moto ni Tensei shita Ore wa Mujikaku Musou suru

Synopsis

After sacrificing himself to save a child, a salaryman is reincarnated into an alternate fantasy world as Rain. He is saved, however, by two famous beauties who are the most feared across the land. Rain's school life begins even as he already leveling up with the cheat skills of both sword and sorcery. (Source: Shueisha, translated)