I enjoy this so much because a lot of the underlying issues that it brings up are realistic. There are girls that act like Kotonoha and Sekai in dealing with guys like Makoto in real life, and it's terrible, but it's rarely addressed in media. The anime takes it to extremes of course (very few people have as little self-respect as Kotonoha), but still, just b/c Makoto is an asshole doesn't mean he won't get laid if a girl is convinced she wants him.

That being said the random sex with Hikari and the 4-way (when do you ever get to see even an implied 4-way outside of hentai?) brought the stretch pretty much to the breaking point for me, since they were so casual and Makoto doesn't seem the type to be able to draw in girls for casual sex. But Sekai, Kotonoha, Otome, and I suspect Kiyora too, were all harboring genuine feelings for him (at least the person they thought he was) and they we're willing to sleep with him in the hopes of changing him to be what they wanted. And, true to life, it didn't work for any of them, and finally they all realized that they couldn't change him and shouldn't accept him as he was in the hopes that they could. Except for poor Katsura who just doesn't have the ego to be alone. The show is a tragedy and while it could have been made better by leaving things out, the elements that make it good for me are the exposition of the consequences of the ridiculous thing these girls all did for a guy who obviously should have been left alone.