I'm hook up after reading this first chapter. But after the comment of Kyouko about Ritsu's virginity, I'm waiting for the bisexual tag and all the drama that will come with.
The author could have add the confession of Ritsu at least. For me, I'm pretty sure her confession has gone like this, Kyouko coming back from a drinking party, obviously she was drunk, Ritsu take care of her and while doing that Kyouko mentioned about a ex/boyfriend or someone she's interested in or fool around with her while joking but Ritsu take the initiative and confess to her, hearing that Kyouko was in shock and couldn't find any word. After that the both of them go to bed, and Ritsu assume that she get rejected and we have the beginning of the first chapter with her cutting her hair first hour in the morning.
Oh and I'm hoping the new character at the end isn't just there for the aaangst and she will be a real challenger for Kyouko.