I wonder if the artist is a woman, character designs by female mangaka have a certain feel and I get that from this work. Very erotic work considering it does happen in real life. I have an attractive cousins that back in our younger days would let me make out with her and play with with each other, but we never went all the way, and this story very much reminded me of that. Now I'm off to read the rest of the stories by Hinahara Emi.
Putting up with temptation, eh? You don't really have to, I would say. You could just...do things to her, like you eventually decided to do in the end.
Nice apology, though. I think most would actually have just been defiant saying it's her fault or something, and normally it'd work out, by Hentai standards.
Great ending though...Start of a life of sweet, sweet...sex? just have a good attitude and treat her well, and I'm sure that'll happen.