Kobayashi wakes up in his homeroom only to discover his homeroom teacher's dismembered body. Being the only witness, and having been found holding the murder weapon, he is viewed as the primary suspect in the killing. Later, Kobayashi and Hashiba visit Akechi, where Kobayashi asks to be his assistant. Akechi agrees to accept Kobayashi as his assistant if Kobayashi can find the killer. At the end of the episode, Kobayashi and Hashiba learn that their homeroom teacher was a homicidal maniac who turned his victims' bodies into chairs. Kobayashi is arrested as a suspected accomplice after the police find murder weapons with his fingerprints on them.