Katsuhira Agata, a once numb to pain teenager, finds himself targeted by bullies due to his emotionless state. Along with Chidori Takashiro and four other teens, they are coerced into becoming 'Kiznaivers' in the Kizuna System. Bound by shared pain, they become pawns in a system aiming for world peace. To succeed, they must reveal their inner selves or face consequences beyond the system's limits.