Maru Sankaku Shikaku

During Chitose's first year of middle school in the spring, a girl named Mika, who shares her last name, transfers into her class. Mika is quiet and attractive, and she constantly clings to Matsuura, a boy Chitose has unrequited feelings for. Chitose feels unsettled by the close bond between Mika, who refuses to form friendships with other girls, and Matsuura, who is gentle toward her. At the same time, it is revealed that Chitose will be transferring to another school. The oneshot "You Baby" is also included.