第 4 集: 園部隆被刃之子朝月光介殺害，引發猜牌遊戲。

4

The episode begins as Takashi Sonobe is suddenly killed by Kousuke Asazuki, another Blade Child. Ayumu and Hiyono discover the person who killed Sonobe once they confront him; Ayumu is then forced to play a game with him to guess his card, he guesses right by a trick he used with Kousuke's knife. (Source: Wikipedia)