Up to chapter 7, Volume 1, this is what I think of the characters.

Takemoto: A likable guy, yet I still don’t feel too attached to him.
Hagu: The design kind of freaks me out, but ignoring that fact…and while I like weird characters, and while I suppose there is a reason for her weird silent behaviour, still don’t feel attached either.
Morita: Hehe he is fun. And stupid. I like him!
Mayama: Same as Takemoto, the difference is that I don’t tend to feel much for characters like him, while I know I will like Takemoto a bit more.
Yamada: Ah, wanted to reach her! “He is an idiot and I don’t know why I like him”, and you know all his faults, I wonder WHO hasn’t been there. I bet there is people who hasn’t, and I think they are extremely lucky! I like a guy for who knows how much, but I am not as lucky as Yamada. At least her guy knows it and doesn’t give her hope. Mine is as stupid as Morita, and don’t even let me start with my confession. But we are friends, and he really likes me as a friend, even though sometimes it’s hard. So that’s why to this point Yamada is my favourite, yeah, just as she appears.

Shippings:
I know this won’t be a couple in the end -or maybe, I don’t really know- but I like the interaction Yamada and Morita have…I don’t think Yamada and Mayama will end up together, and I suppose Hagu will be in a triangle so it’s pretty out of the picture that Morita and Yamada end up being something. I can’t imagine what will happen. But if it comes to it, I prefer HaguTakemoto. Yet I have the feeling that won’t happen…but I can’t see Hagu with Morita, really. One is too weird, and the other…annoys me with her silences.