Comprehensive Comics: Invincible at the Start, Support the Butterfly Sisters!

Travel to a post-apocalyptic world with multiple dangers such as ghouls, ghosts, and monsters. Fortunately, I had already awakened the savior system, and obtained the template of a certain bald devil at the beginning. But how can one maintain this hard-won peace with the power of one person? Tatsumaki: Humph! You want me to wipe your ass again! Kotori: Damn brother! Hurry back to work in Ratatosk! Kanae: My lord, please give me your orders~! Rias: If you don't marry me, my brother will lead the demon army to attack! Sakayanagi Arisu: Don't worry, Uncle Ye, I will definitely help you manage the harem... Ahem, racial conflicts~! Simple! With wings everywhere, wouldn't there be someone to help you solve your problems? ! Invincible style, leaning towards daily life. The male protagonist is both Buddhist and ghostly. It may involve: one punch, battle, demon slayer, practical teaching, magic high, school apocalypse, black bullet, super cannon, death, etc. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.