Kusanagi Kiseki.Takeru visits his younger sister, Kiseki, who is being kept in a maximum security prison. Although she enjoys his visits she has a brother complex and appears jealous he has so many female teammates. Takeru is visibly upset that his sister is forced to wear chains and is kept permanently sedated except for when he visits. 35th Platoon apprehends several criminals, earning a lot of points. Takeru has a hallucination of the two students Haunted had killed in the arena, Kyoya and Yoshimizu, and realises Kyoya is still alive and now works for the Chairman. The Chairman visits the prison and watches Kiseki being woken up. He reveals Kiseki has a demon body and anything she touches is dissolved and then absorbed by her body which causes her demon body parts to grow out of control. Eventually she would consume the whole planet. To prevent this Kiseki must be routinely killed and brought back to life in order to kill off her demon body parts. Visits from her brother normally improve her mental stability, but after hearing about his new female teammates she becomes upset and unstable. Her power surges and she transforms into a horned demon and begins absorbing her restraints. The Chairman's subordinate Kurogane enters her cell to subdue her. Kiseki cries out for her brother. On another mission 35th Platoon track an extremely dangerous wizard to his hideout but they are discovered. Takeru is forced to chase him but the wizard is murdered and absorbed by Kiseki, who escaped prison and tracked Takeru by his heartbeat. Discovered by the girls Takeru draws his sword and almost attacks them when they see Kiseki. After calming down he reveals Kiseki is his sister and has the highest threat level for a witch on the entire planet. He promises to keep Kiseki from harming his friends. The Chairman sends Kurogane to capture Kiseki. While Kiseki sleeps Takeru explains Kiseki killed many people as a child, but only because her power forced her to when she felt threatened, and she is normally a very sweet and shy girl. Ikaruga helps by explaining she likely suffers from Overflow Syndrome, where Witches not from a Witch family whose magic spontaneously appears cannot control their magic. Normally this can be overcome by wearing a Gleipnir necklace as Mari does, but Kiseki produces so much magical energy she overloads the Gleipnir and becomes a walking natural disaster. Takeru sadly admits the best thing to do is hand her over to the Inquisitors. Oka suggests he take an hour to bond with his sister and the girls dress Kiseki in a nice outfit so they can go on a brother/sister date. Takeru and Kiseki have a nice time and Kiseki asks Takeru for a favour. Takeru promises to do anything she wants. Kiseki asks Takeru to kill her.