Despite the protagonist putting on a face and thinking cocky at the start, he's pretty sympathetic (I can't help but be sympathetic regarding a person who was called "Doctor Sex" in elementary school and got betrayed partly because of that). I think the basis of the relationship between him and the heroine was also well established in this chapter. And the art-- especially the eyes-- is striking, as expected from this mangaka.
But I'm sure it's going to be one of "those" manga for me. That is, if it keeps this up, I'll probably be able to say it's well-made in regards to characters, story, and theme execution... but everything'll be enmeshed with the erotica, so I'll have to trudge through that.
Eh. If I drop it, I drop it.
I'll stick around. But if I see any hint of peggin then:
Remember, boys: if she wants to peg you, the relationship is already over.
And even if she wanted to continue the relationship... it's not worth it.