S1, E5: Just as Suzunosuke's suspicions about Morizono reaches its peak, he gets tricked by Morizono and ends up locked in a secret room in Suzunosuke's own basement. As the two men learn the truth about each other's pasts, Haruhi finally decides to investigate his brother's death. However, his decision worries Sesuna. After all, her other personality may have something to do with his death. ©NIPPON TV