Ep. 9: A Friend's Tears

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Riki's next step to reassemble his friends is to convince Kengo to join their side, but Kengo refuses to listen to him, claiming that all Riki and Rin need to do is to rely on their friends. Riki visits Kyousuke, who hints that Kengo is lying about something and Riki realizes that Kengo's arm is not injured as he claims. (Source: Wikipedia, edited)