Tatsuki Oohira

Kotarous cousin. As a kid he developed postcognitive powers that manifested themselves when he touched Kotarou. Tatsuki hates his power leading him to be less than friendly towards his cousin when he first moves in. However as the series progresses he begins to develop fond feelings for his cousin and finds himself unable to blame Kotarou for his powers. This causes him a lot of turmoil and confusion. After the death of his grandfather he appears to have a psychotic break. After this he gains other powers than postcognition most likely a form of psychokinesis. He attempted to kill Kazuma twice once with his new powers and the other time by strangulation both times occour in Vl 7. but was stopped by Kotarou. After this he appears to have gained a semblance of sanity. He has a great dislike of the child Akira and hates hospitals.