This manga has been on the top of my TBR for so long.
It is a sweet romance yaoi, a gay-4-you, similar in "No Touching At All" in many ways, like: Kurejima is an older, straight, kind guy, who befriends younger, melancholic gay Hiroto. I like this kind of uke because it is his melancholic personality that attracts the seme most than anything. They befriend first, and it takes time for Kurejima to start realizing his feelings, having never been in love with a guy before. In fact, his motto was "no younger guys, no men".
I would say that only the age was a negative factor for me. Hiroto is just 16, while Kurejima is 23. Kurejima had many girlfriends before, Hiroto is a virgin student. If only Hiroto was 17... 16 in my eyes is just too young.