Chapter 1 Along Came a Mansion

(y/n) was a normal teenage boy. He was walking from a party one night and was near the forest. A lot of fog and he became lost. He came a across a big, abandoned mansion or so it seemed. He went in and waited for the fog and a storm to pass then try to get back home. He doesn't know yet that there are some girls that aren't human who don't want him to leave and make him stay forever. With (y/n) escape this haunted mansion full of yanderes?