I just took a peek in the first volume of this, and it's nice to see the visual evolution of the characters. Back then Urushi looked like Takagi's sister and now she has a visual personality of her own.
That being said, it's also true that since Urushi became conscious of her feeling for Ayumu, she started to act more weirdly around him, which makes sense, but it's also a letdown considering how provocative she was in the begginning. That is probably the reason why Rin started as an annoying girl who served as an arrogant rival, and eventually became best girl.