Anime Crossover: Am I the only one who can see ghosts?

Fang Yan transmigrated to a crossover anime world. Looking at the familiar two-dimensional characters, he thought he had entered the world of a slice-of-life anime. But suddenly one day, Aki Tomoya died and turned into a vengeful ghost to come after him. At the critical moment, his system was also prematurely reactivated.
Fang Yan then realized that this was not a slice-of-life anime world at all, but a world where strange things were reviving, with all sorts of demons and monsters, and evil Onmyoji appearing one after another. But no matter how strange things were reviving, Fang Yan could always be above them.
Mai-senpai, has your soul been pulled out of your body? I'm sorry, I can't help you right now. Why don't you follow my friend for now?
Kaguya Shinomiya, do you have a dual personality? Once your inner personality comes out, you're exceptionally domineering and even treat human life like dirt? No problem, watch me take her down!
Yukino Yukinoshita, did you and the cat switch bodies? Hmm, this cat seems to have...