Cross Over is a Japanese manga written an illustrated by Kouji Seo. The series primarily follows the St. Mariannu boy's basketball team led by the freshman Ogata Natsuki to defeat the prefecture's best team, Fujiwara Academy. This story takes place in the same universe as other Kouji Seo's works do: Suzuka and A Town Where You Live. Cross Over was serialized in the Japanese magazine Weekly Shōnen Magazine published by Kodansha from 2002 to 2003. It has since been compiled into seven bound volumes.