Mysterious Girlfriend X

Title: 謎の彼女X (JP) Nazo no Kanojo X (Romaji) Mysterious Girlfriend X (EN)

Artist: Ueshiba Riichi

Publisher: Kodansha (JP) Tong Li Publishing (CH,TW)
7 Volumes and ongoing as of post

Demographic: Seinen
Genres: Comedy, Romance, Mature, School Life (Slice of Life), Supernatural

Plot: One day, a strange transfer student appears before Tsubaki. Urabe Mikoto is an antisocial girl, whose hobby is just sleeping during class-breaks. One day, Tsubaki goes to wake her up and accidentally tastes her drool… And gets hooked on that! After that, he starts going out with her and gets to know her better. Her second hobby, as it turns out, is carrying around scissors in her panties and cutting paper into flowers…