He was suddenly summoned to another world one day. Monsters poured out, a huge disaster incoming. His ability is the lowest. [Player’s level is low] [Your level is hopeless] It doesn’t matter whether you’re the chosen warrior, a talented wizard, or someone who traveled back in time. One must do everything they can, in order to survive. The Regressor’s Instruction Manual. “It doesn’t matter if I’m trash.” Is there anyone who wouldn’t do anything they could to survive?
Warning, the series titled "Regressor Instruction Manual" may contain violence, blood or sexual content that is not appropriate for minors.