I really liked the main couple and for them i would have given 5 stars, but since there is a oneshot that i didnt like, i will put 4.5 stars. The story is about an incubus, a playboy that uses girls only to feed while having sex with them, his mentor, the infirmary sensei, tells him that there is nothing better than to feed on the person you love. Kabutani doesnt believe in this, till one day he smells an incredible scent coming from one of his classmates, one that he used to observe already but think was annoying. The 2 boys are sort of friends, but Kabutani day after day understands he wants something more, he knows that Kiriyama is in love with him, but when Kabutani kisses him and tells him he wants to have sex with him, the other boy tells him to stop, bcs he isnt like all the other girls he went out with and for this reason he doesnt want to see him again. From that moment on Kabutani decides to not feed anymore on someone else, he cant do it anymore he only wants Kiriyama. Both boys are jealous of the other and possesive, and in the end Kabutani will understand that this is the love his mentor was talking about. The 2 boys are a cute couple and i really liked them, i think was useless to add that oneshot. I would have liked more chapters about the main couple.