Well, real-life opinions may differ as to how effective "sex to overwrite an unwanted memory" really is. For now, Akira seemed to get over her one-sided crush, and perhaps that alone is good enough. As for the possibility of a future with Ryouta ... that's probably up to the artist whether to do a sequel.
"I can't shake the feeling that a sad ending is coming", eh? The sense of a Hentai protagonist can be quite insightful indeed.
I feel this had the potential to be really sweet, in the sense that he could comfort a heartbroken soul, or something like that. Still happened in a way, and that ending makes me think that they could still become a couple. Like, she's over her crush and he seems relieved, so you know, maybe one day she'll realise that the one for her was right beside her all along.
For a moment I thought she was seeing her friends bang underwater and was like †žThe fuck? She goes into a room - her friends are banging. She goes into a pool - her friends are banging. Are they banging everywhere?“
Oh, also. That was hot.