Ep. 4: Takashi Sonobe is killed by Blade Child Kousuke Asazuki, leading to a card guessing game.

4

The episode opens with Takashi Sonobe being abruptly murdered by Kousuke Asazuki, identified as another Blade Child. Following this incident, Ayumu and Hiyono track down the killer and confront him directly. During this encounter, Ayumu is compelled to participate in a game where he must guess Kousuke's card. He successfully identifies the correct card by employing a specific trick that he previously utilized involving Kousuke's knife. This sequence of events highlights the dangerous interactions between the characters and the lethal nature of their conflicts within the narrative.