Yoite  

Death God, Kira User, Koudou Sora, 宵風

In Kairōshū, there is a 16-year-old ninja named Yoite who uses the forbidden technique "kira". This technique allows him to shoot his ki into a target's body and control it from within, which can cause severe harm or even death. However, using this technique comes at a cost - Yoite gradually loses his life force, resulting in the loss of his five senses and eventual death. According to volume 4, he has only two months left to live. Despite being sensitive, Yoite almost killed a delivery man just because he called him "cute". He also eats quickly. After abducting Miharu and taking him to an abandoned train car, Yoite tells Miharu that his friends will die from the ki implanted inside them unless Miharu grants his wish using the Shinrabanshō. However, this turns out to be a lie. Typically, Yoite dresses in all black with leather gloves and a tan-colored gatsby cap.