Sen'ichi Kurashige

As Kyou's science teacher and a key figure at Maihama Minami High School, this character is affectionately known as Kurage. He holds the role of sponsor for the Swim Club and later proposes to Mizusawa, though their union is interrupted by a significant event. His existence is complex, as he remains confined to the school, and an alternate version exists as Shizuno's teacher. Formerly, he was an engineer specializing in quantum technology before transforming into a Meta-Body.