Koukou Kyuuji Zawa-san doujinshi by jingrock. Risa Miyakozawa, aka Zawa-san, is the only female member of the Nissen High School baseball team. She's talented, but being a girl, she doesn't get to participate in any official matches, and yet she trains just as hard as the rest of the team anyway, just for her own personal satisfaction. (mangaupdates)