A Journey Through Worlds: I Am the Protagonist

The heroine isn't a good person, but she isn't especially bad either. There's no fixed male lead, but there are men. The heroine isn't faithful to one person. I can only promise that there won't be multiple men in the same world. The Journey of Flower. Twilight, Bella. Ashes of Love, Jin Mi. Crossover with American and British works (Harry Potter and beyond), Tessa. Eternal Love, Bai Qian. Crossover with Marvel (Resident Evil + Iron Man + Avengers), the clone Sophie. A Journey to Love, Ji Yunhe (the male lead is a fish, so I've left him out). Crossover with Thai dramas (mainly The Gifted), the heroine from the Thai version of F4 Thailand + Teacher Pom. Heroes, Wen Rou + Su Mengzhen. Crossover with Korean dramas: Missing You + Squid Game, Lee Soo-yeon. That's roughly the first half. The second half starts around Chapter 595. Two chapters in between are either character extras or a sort of ending for the first half. The next part is the second half, featuring an original heroine.