Any Door in the City

This is a story in which the protagonist travels through various worlds with a halo of bad luck, full of jokes and surprises. Protagonist: "System, please travel to ancient times for me." System: "Okay." In Jurassic, the protagonist appears and is almost eaten by a Tyrannosaurus Rex. Protagonist: "System, I'll give you another chance to travel back to ancient times." System: "Okay." During the Normandy landing in World War II, the protagonist was almost hit by a stray bullet as soon as he appeared. Protagonist: "I, XX, what's wrong with breaking the system? Why can't I succeed once?" System: "Brother, I told you that I was teleported randomly, and I don't know where I will go." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.