第 4 集: 卡琳發現一隻酷似已故寵物詩詩的貓，而和音則在調查密室。

4

Karin finds a cat in her room that looks remarkably like her dead cat Shii-chan. Kazune decides to investigate. He heads for a suspiciously locked room, and asks Karin to stay away from it. Meanwhile, Karin begins to make friends at Sakuragaoka and Kirio plans his next attack. (Source: Wikipedia)