During gym class Arata ends up hurting himself, and Ryo explains that despite his youthful appearance Arata's body is still biologically that of a 27-year-old man. Meanwhile, Chizuru takes Arata's advice to try smiling more in an attempt to make friends, but her forced smiles are misinterpreted by Rena as Chizuru mocking her. Rena also learns that despite viewing Chizuru as an academic rival Chizuru was unaware of who Rena was, causing Rena's perception of both Chizuru and herself to be strained.