For her novel, Yukina chose to have a pseudo-love with her classmate, Shigure.
Through love missions, the distance between Yukina and Shigure is gradually getting closer...!? Yukina and Shigure are finally connected.

The romantic comedy centers on the beautiful and witty high school student Reira Watanuki. She and others around her notice her fastidiousness. One day, Watanuki disguises herself as the lovable male classmate Owaru Sangatsu. Reira faces new challenges as she continues the experiment and sees life from a different perspective.

(Source: ANN)

Mito, who has no family to rely on, lives on the streets, disguised as a boy. Ruka, a vampire, saves her from a perilous situation and makes her an offer: become his subservient thrall from which he can feed whenever he wants, and she can live with him—in the boys' dorm. Because her very existence depends on her secret not being found out, every day is a new danger—to say nothing of that vampire! Meanwhile, Ruka, not knowing Mito's a girl, dotes on her night and day in an attempt to ripen her "disgusting male blood," but when real feelings develop... This dangerous romance between a crossdressing girl and an obsessive vampire begins!

(Source: Kodansha Comics)