To give more context, I'm looking for the title of a bl in which the MC transmigrates into multiple worlds. I just remember that in one of the arcs the body that the MC takes over is a person who made a Frankenstein thingy and turns out the Frankenstein (ML) is a soul fragment of Cuthulu's. In another arc I believe the main character and the ML end up living as gods forever (Idk how that works since there's still an arc afterwards). Thanks for helping and just saying that not everything I have said may be the exact same as in the novel, this is just from my memory so it's not guaranteed to be 100% true.
Not very good at remembering quick-wear arcs, but I think its this one: Boyfriends Always Turns out to Be a Horror Movie Boss
It was Boyfriends Always Turned out to Be a Horror Movie Boss. Once again thank you everyone for helping me find the novel! (つ≧▽≦)つ