2nd year high school student. 185cm. Type O. Foul-mouthed, short-tempered, and surly. Extremely quick to pick a fight; often seen with a bloody nose. Frequently makes provocative remarks to others. Generally looks down on everyone else. Has no interest in girls, or romance in general. However, because he gets approached by so many people, he has dated a few times, though he hasn't had many good experiences. He actually dated the school nurse once. They broke up long ago, but she supposedly still clings to him. He doesn't truly trust his family or his friends. True to his name (Sojo/Running), he is fast on his feet. He joined the track club but quickly became a ghost member. Listens to Western music often, though he doesn't really understand the lyrics. Naturally bright, but doesn't study at all. Looks down on teachers. Hates adults. Favorite foods: Spaghetti, strawberries, omelet rice. Disliked foods: Spicy food in general, chocolate. Loves dogs.