Books in the RePlay (BL manga) series

Yuuta and Ritsu have been playing baseball togethersince they were children, but after being defeated in a local tournamentover the summer, they must retire from the high school team to study foruniversity entrance exams. Still, Yuuta finds himself unable to give up hislingering attachment to baseball. The one person who can truly understand him isRitsu, who has been acting worryingly distant since they quit the team. Butthere''s something Yuuta himself doesn''t understand... Does he think of Ritsu ashis partner in the way that a teammate would, or is the affection between themsomething stronger?