At the beginning, I was pretty triggered with the very first page. As I continued to read, the violated feeling lessened, but in the end they seemed happy so I'll leave it at that. It's a good thing that Akira knew it wasn't the best thing to do, but it's understandable that temptations and desires can take over anyone. However... how deep of a sleeper is Masato? Unless he was in a coma, drugged, or strongly unconcious, being penetrated in the butt could surely wake someone up, no? Then again, he thought it was just a wet dream before catching Akira in the act... hmm. :v
Kimi no Shiranai XX