A young man named Gautama is hit in the head by a huge billboard and loses his memory. He must have had something to do, but he can't even remember his name. However, he is scouted by a sumo stable because of his ridiculous physical ability that allows him to survive being hit by a train...? A sports comedy by Atsuo Kuwasawa, best known for the big idiot high school baseball manga "Midoriyama High School"! Also included are short sports stories about boxing and baseball.