Personally I'm starting get tired of Ucchi. She's just this one note character that doesn't make an attempt for truly getting to know Tomoko nor to properly get close to her. She just keeps acting like a ten year old who doesn't understand their attraction for a classmate.
Yuu wanting to go to Aoyama isn't surprising, she was bummed out that she didn't pass the exam to be with Komisomething and Tomoko in High School so it was expected she would try to be in the same college as Tomoko if the opportunity presented itself.