This is one of those works that has genuine sociological merit in turning a traditionally male-dominated situation on it's head, and is very relevant in Japanese culture which is still very patriarchal. This is one way that Hentai can be so much better than RL porn in being art and a means of expression as well as erotic.
The art is also awesome and the story intense. Definite favourite.
You know, I fell sorry for him. He is a hentai protagonist and she makes fun of his dick... By the way: I thought at first that this was a chapter from GfM and not Bavel...
I would feel bad for the guy considering he had his pride as a man utterly destroyed...But considering what happened afterwards and that ending, well...I guess he's happy with that. And with that, another man converted into an M by a kogal. But at least he's a happy M who would be willing to pay for more of her services. Great artstyle by the way, I really like it.