It's Hard to Calm Down When Trying to Save All the Worlds, but the Game Starts with a Brutal Beating!

Su Mu accidentally reincarnated into the ruined time and space hub and became a 'changer'! As long as someone breaks through the time and space barrier with a strong obsession, he can help the other party rewrite the history that is difficult to reconcile, and at the same time gain the other party's peak power! So... The first guest, Tanjiro, arrived! Demons destroy the world, Su Mu is cruel and cruel, and saves Yanzhu... Naruto world! He accepted Naruto's help, changed the night of the Nine-Tails, and saved Jiraiya... He accepted Sasuke's help and rewrote the night of genocide... In the world of pirates, he accepted Luffy's help and fought with the top to save Ace... Pure love world... The world of magic... Chainsaw Man World... .... Three body world.. The world of American comics... Wait There are always things that are difficult to resolve in the world, and these will all be rewritten by Su Mu! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.