After Kaos and Koyume start living at the dorm for a while, they all decide to go take a trip into the city together. There, they decide to go to a crepe shop and a huge art store and enjoy their time together.

Because of a deadline coming up, Ruki ends up staying up two nights in a row. She ends up going to school in this condition and can’t help but feel sleepy, despite how earnestly she usually tries at school. However, this dazed state she’s in makes her look sexier than usual, causing a stir in class...

Kaos and the other girls end up at the beach, solely because Koyume tells them, “Because it’s summer!” However, Koyume was the only one who brought a swimsuit, because she’s the only one who had the idea of actually having fun at the beach, so she takes them to the rental shop so they can all get swimsuits.

It’s now Christmas season. Kaos, Koyume, and the matron are all busy setting up the Christmas tree. Meanwhile, Ruki keeps walking back and forth in front of the dorm with a grim face for some reason...