I'm a Sim, and the Heroine Breaks In?

Ye Cheng came to a world where various protagonists were rampant, and became a passerby in the pretentious background of each protagonist. I thought I would live an ordinary life like this, but the Sims system suddenly appeared! By simulating different lives in various worlds, you can not only experience life, but you can also bring out the gains from the simulation at the end of the simulation! In the first world, Ye Cheng had a great enemy when he was six years old. He was adopted by a killer organization and became an ace killer ten years later. During a mission, he took revenge and destroyed all his enemies, leaving only his daughter in prison. Who knew that the other party had Stockholm Syndrome! In the second world, Ye Cheng transforms into a middle school boy and becomes the school beauty's roommate in a strange and hidden world. When the school beauty encounters a monster that threatens her life, she shouts the forbidden magic spell to destroy the enemy with one move! After that, a girl who had numerous entanglements with Ye Cheng would appear in every simulation, but Ye Cheng didn't pay attention. As a result, after he simulated it many times, the female protagonists who originally appeared around the male protagonists came to visit him one after another. "Master, I will hand over the rope to you..." "You... Were my savior in your previous life! The King of Magic!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.