After Risking My Life to Save the Sacrificial Heroes, I Returned to Japan. Apparently, the Heroes in the Other World Are Sick

Source: https://kakuyomu.jp/works/16818093085679083559

Synopsis

The main character, Majima Shuji, is suddenly summoned to another world and takes on a mission as a “hero’s guide” to lead the heroes. He sets out on a journey to seal the gates of the Demon World with three heroes, all of whom are beautiful girls with unique personalities, but in the process, he discovers that their lives will be sacrificed.

In order to save them, Shuji decides to risk his own life to destroy the gate of the demon world.
Shuji succeeds in destroying the gate of the demon world and saves the heroes, but he himself also loses his life. ……thinking that, he finds himself back in modern Japan and somehow back in time, having inherited all of his powers: he is now a hero of the other world, and he is now a hero of the other world.

Meanwhile, at the same time, the heroes in the other world think Shuji is completely dead, and they slowly and gradually become ill. …… Eventually, the girls learn that Shuji is alive and act on their pent up passions.