Tameiki no Haru ni Koi no Natsu

From Renta:

Kuniharu Nishio had been in love with his friend ever since high school. He followed his dream of being a stylist, never letting go of these feelings, and while the nature of his work was very accepting when it came to same-sex relationships, he spent his days feeling somewhat gloomy and depressed. That is, until one day, when a new camera assistant named Ruka Nakamine showed up and suddenly confessed his love for Kuniharu. Ruka was very aggressive and annoying to the point that Kuniharu felt that kissing him was the only way to shut him up...