Koibami Shoujo

Afraid of women, high school student, Kyou Ooishi. Five girls suddenly confessed to him. Among them, four are creatures called "Koibami" that devour human romantic feelings. If he has his romantic feelings eaten by these girls, he will never be able to love again. However, he cannot abandon the feelings of the one who confessed to him for real, Kyou decides to find the one he truly loves among the five! A brain-shaking romantic comedy suspense begins.

(Source: Shogakukan, translated)