Mutation: I Became a Girl and Now I Want a Quiet Life

[The pace should be slow, and it may lean toward everyday life. Gender-bender, no harem. The protagonist is a little greedy, but also timid, so he keeps a low profile. The world he transmigrates to has undergone a strange transformation. The cover was made with AI. There is a System, the kind everyone in the world has, but it was created by a certain entity. It only provides support; getting stronger still depends on yourself. The heroine is Zhou Han. At first, she is somewhat straight (she likes neither men nor women), but later she falls for Bai Yu.]

“I'm Bai Yu. I had a perfectly good life, but an accident brought me to a brand-new world, a world with freaking dungeons. And my spawn point is a damn coffin... Why is there a coffin in my house? I even woke up inside it!”

Bai Yu: “Hello, I'm Bai Yu. I like eating melon and watching the show [watching other people get beaten up (crossed out), making sure everyone stays safe and stepping in to help at critical moments]. I also like picking up random things wherever I go and playing with remote-controlled little robots!”