The Villain in the Dark Room Is Dangerous and Deadly

[Quick travel + dual male protagonists + main attack + crazy criticism of yandere + love at first sight + little black room literature + double clean 1v1 + sweet] After being inexplicably pronounced dead, Mu Cheng was bound by something claiming to be a system. 016: Host, your task is to play the villain according to the script and be a stepping stone for the protagonist. Hearing this, Mu Cheng lowered his eyes and smiled sweetly: Okay. Villain? A stepping stone? It sounds really interesting. * At first, looking at its well-behaved and harmless host, a certain system was full of confidence: it was just a small task, easy to handle. But who would have thought—— The poor little man who was living under someone else's roof was forced to be trapped in a corner: "I'm going to be engaged to him soon. You'd better figure out your identity first." The cruel and sick bamboo horse was trapped in a cage: "Since you brought it to the door yourself, don't blame me for operating on you first." The sinister and paranoid boss's eyes were red: "I'm just a despicable plaything, and you still try to take advantage of me? It's just a dream." … If Mu Cheng wanted it, Mu Cheng would get it. The villain and the mission are all unimportant. —— In response, a certain system collapsed with a sharp explosion. I asked you to be the villain, but who asked you to lock up the protagonist's dark room! ! ! Mu Cheng: Then... I'll pay attention next time. 016:…… After working hard for hundreds of years, I end up in debt in the end? So... Why was it blind in the first place? * The 'protagonist' who works hard and wants to follow the plot is attacked by VS the paranoid 'villain' who only sees suffering. Note: Both of them have systems, sweet pets, and no abuse.