らいちとプールに行くことになって、らいちが張り切って用意して渡された水着がきわどくて、念のため自分が持ってきた水着を着たらがっかりするよね～って悩むあおい姐さん

Aoi is going to the pool with Raichi, and Raichi, all excited, prepared a swimsuit for her—but it’s pretty revealing. Aoi ends up worrying that if she plays it safe and wears the swimsuit she brought herself instead, Raichi might feel disappointed.