Ame to Muchi wa Tsukaiyō (S01E172)

A man called Executioner Kohei is brought under strict guard to the Shinsengumi. He is the executive officer of the Radical Joi Faction, the Akatsuki Party, and is also a lethal murderer who has killed 35 bakufu officials. According to Kondo, Kohei not only endures torture, but laughs with joy during it. The Shinsengumi’s mission is to get Kohei to tell them details about the large-scale terrorist attack the Akatsuki Party is supposedly planning. First off is Yamazaki, who goes to the investigation room to take a stab at it! Will he be able to get Kohei to talk?! (Crunchyroll)