"Kiznaiver" is an anime series set in a futuristic city where a group of teenagers is connected through a system called the Kiznaiver. This system allows them to share physical and emotional pain, aiming to promote understanding and empathy among them. The story explores their relationships and personal struggles as they navigate the challenges of adolescence. The main character, Katsuhira Agata, is one of the Kiznaivers who initially feels little to no pain. As he and his friends experience shared suffering, they learn about each other's lives and emotions, ultimately seeking to overcome their individual traumas and grow closer together.