also with the girl arcs, more attention is around one girl where you can get to know her better than normally you would do, the focus on one girl per arc is enough to make people to know the girl alone and decide whether or not to like her, a lot of people like Sae cuz she is cute, but the arc sucked ballz so she lost points. now for instance all arcs can be great but Sora's arc might suck balls, I like Sora already, and i might lose it then, i didn't play the game yet so dunno.
on topic though i would like to say Sora is amazing, Haru just dumped her, kind of, and she took it like a sister actually. she changed from romantic love into sibling love. at least that is my impression, she didn't like it though, but what can she do ?