Yandere's Rhapsody from Another World

(Yandere) Su Cheng died suddenly while writing a novel and traveled to a different world. This world was no different from his original world. The only difference was that there were more non-human creatures in this world. He traveled to a high school student named Aoi Yato, but when he first crossed over, he relied on the original owner's incredible sense of smell to smell the non-human smell of his childhood sweetheart. After finally conquering this yandere, he found that if he died, he would travel to the next world.