Kyoukasho no Koibito MangaDarling in a Textbook, Darling in the Textbook
Only energy can replace Oohira Kensuke' important lucky charmâ€” a picture of a warrior from a textbook! For six months, Kensuke has been going out with Sakaki Keiichirou. Being popular in his company,but Keiichirou's real identity actuallyis..!? Contains two other stories about Keiichirou's elder brother and his lover as well as a special extra!.