Kotaku-Terayukai is the younger brother to Yoshikage, Josuke, and Reimi and their mother is Ebisu-Terayukai and their father is Kataru-Terayukai. Kotaku-Terayukai is mostly known for his nice, approachable, and confident personality. He hates discrimination and he is a massive sports player and gym goer as he has won many medals and was chosen by God as his champion and divine man. His friend and close-companion is Jin Han Sung; a Korean schoolgirl.