Koko Tsukishima is a gentle and kind-hearted character from the anime series D.C. II: Da Capo II. Known for her cheerful and optimistic demeanor, Koko is a student at Kazami Academy and a member of the newspaper club. She has a longstanding crush on her childhood friend Yoshiyuki Sakurai, and her story arc often revolves around her feelings for him. Her character explores themes of love and friendship, and she plays a significant role in the development of the main storyline, contributing to the emotional depth of the series.