4화: 카린은 죽은 반려동물 시이짱과 닮은 고양이를 발견하고, 카즈네는 밀실 사건을 조사합니다.

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)