So There Really Are Monsters in This World

Urban setting + school ghost stories. Beware, monsters are on the prowl.

Kuang Tian'en loses his little sister, but his parents tell him he never had one;

He goes on a date with the upperclassman he has a crush on, only for a pair of wings to sprout from her back as she tries to eat him;

A younger schoolmate invites him out for milk tea, but he mysteriously ends up in an old mansion, becoming the groom at a bizarre wedding;

His parents keep making him drink some strange medicine.

Then a pink-haired girl becomes his desk mate. Her face looks just like that of his