I love Junba <3 I love how you you wrote the progression of Jun and Aiba's relationship, how Jun finally overcome his trauma.
Nino is perfect as Jun's best friend and even if he had to break Jun's past to Aiba, I think it's necessary since I don't think Jun will tell Aiba about it, he might but it'll probably take a long time and the story must move on lols
I also like that you spent quite a considerable amount of paragraphs about their first love making, it's sweet and hot at the same time <3