Comprehensive Comic Reincarnation: the Savior of All Worlds!

Traveling from the Apocalypse to various anime worlds, awakening the savior system of all worlds. I will be the savior of all planes! "Isn't the sidewalk very spacious?" "Madam, you don't want Illya to do such a thing, right?" "It's not me that's wrong, it's the world." … Well, wherever people need help, there will be a savior, right? If there is no cure, then everything will be destroyed! It may involve Apocalypse, Demon Slayer, Black Bullet, Fate, Fairy Tail, Game of Life, re0, One Punch, etc. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.