Boys' Dormitory Group in a Melodramatic Novel

You’ve transmigrated into a book, and the system’s only function is to provide you with a group chat of four people. Your bunkmate, a rough-and-tumble straight guy, has become the pitiful, downtrodden love interest in a toxic romance novel. The guy in the bunk above you, a delicate and refined "zero," has become the scummy male lead in a "chasing-your-ex-to-the-crematorium" story. Your roommate, a cheerful rich guy, has become a phoenix man from the backwoods. And you? You’re just an extra. Hahahaha. Ridiculous. [One person transmigrating is a battle for supremacy; four people transmigrating is the vast world letting four lunatics run wild.] — Calm and rational "third-wheel" top × Gr...