Why? Because its unrealistic? Well, duh, its a cultivation world and he is a reincarnated super assasin, what did you except? The story of an assasin living a perfectly normal life going to school and falling in live with his teacher who later became his step sister, who he will screw but turns out he already screwed the other step sister then the teacher escapes the other step sister gets pregnant but the mc still marries the teacher? This is not domeatic kanojo so i really dont know what you want. At east put some reasoning behind your comment.

Recently i have read a novel where the mc reincarnates as a tree and i realized that i kinda like these weird reincarnation novels and reincarnating as energy can definetily count as one. Im gonna dig into this.