Shuugaku Ryokou no SusumeRecommendation for School Trip; Shuugaku Ryokou no Susume☆; 修学旅行のススメ

Yuuka is on a school trip to Kyoto but she's in the same group as her ex-boyfriend and his new girlfriend, so she ditches her group and goes off on her own--only to bump into a classmate doing the same thing.