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Traveling to a world where magic and technology go hand in hand, as the protagonist of the time traveling, how should I be a low-key and ordinary passerby? That beauty who is a mixture of elf and human, please don't pester me, okay?

After traveling through time, he became the apprentice of an old wizard; The quarrel among several empires is for the sake of world peace; Leading the elves to slay the dragon is to save the world; Life is different when you have the support of a wizard!

The world lines continue to be chaotically intertwined from a certain point on; Characters from the world of anime and movies began to arrive; After acquiring the power of Kamen Rider, Chen Qingxiang had to deal with these characters, and he changed from a small nursing home employee to an "Earth Defense Operator" who maintains world stability. "If you are obedient, I will send you back; if you are disobedient, I will beat you up and then send you back." This is Chen Qingxiang's operator code. More importantly, he wants to cross world lines with Doraemon, Grandpa Kirito, Teacher Saitama, Kamen Rider, Batman, etc. To save other worlds? So what happened to the world line?