Hell Mode: Yarikomizuki no Gamer wa Hai Settei no Isekai de Musou suru

Kenichi Yamada has spent years searching for games that refuse to go easy on him, until a mysterious invitation offers a game that never ends and he immediately selects its harshest possible setting: Hell Mode. Instead of waking in front of a screen, however, he is reborn in another world as Allen, a child born into a family of serfs.

Everything here is brutally slow, from leveling up to understanding the mysterious Summoner class, and there are no guides, forums, or other players to provide answers. Rather than despair, Allen finally recognizes the challenge he always wanted. Using memory, patience, and relentless experimentation, he begins building his strength from nothing while searching for a way to free his family from the fate imposed on them.