With Kaori stuck in the hospital, Shizuku is resolved to do whatever she can for her. Time is precious since they can only see each other during visitor hours, but Shizuku's writing helps keep Kaori in good spirits. As the two girls spend more time together, Kaori's young sister, Shiori, starts to resent how close they are. Accused by Shiori of stealing away her big sister, how will Shizuku handle Shiori's hurt and jealousy?