My Demon Goddess Wife from Another World Shares My Body

This is a campus romance dressed up as an otherworldly fantasy. A poor college student is forced to spend a year in a psychiatric hospital after a white-haired girl suddenly barges into his life. In the end, guided by the girl, he transmigrates to another world to break her seal. Of course, his reward is getting the girl, and all of her. Unfortunately, he transmigrated from a human into a spider. Even worse, he's a female spider! But even as a monster girl, that doesn't stop this young man from conquering another world and realizing his grand ambitions! A newcomer here, and I'm still a student. I'm just writing this for fun, so let's all have a laugh. If you don't like it, please don't flame me. Also, I really haven't decided on the heroine yet... I'll revise that later.