Ienai Himitsu No Aishikata

highschool teacher saeki nao is secretly a hardcore otaku who loves yuri manga. one day, at a doujinshi convention they participate in, nao is eager to convey her feelings to “nyapoleon”, an artist she worships. however, it turned out to be a girl from her school, kurumizawa haruka, and moreover, she had to help her. after the event, they decided to go out for a meal, at haruka's suggestion. when she wakes up in the morning, there is haruka in the bed?!