Template:Infobox characterIssei Tsubaki (椿 一成 Tsubaki Issei) is president of a karate club in Jindai High and Sousuke's rival. He is a skilled martial arts artist, but require thick glasses because of his short-sightness. He is somethimes accompanied with three identical karatekas, all black belts. He only appears in Full Metal Panic?: Fumoffu.