Kohaku Oukawa is a character from the multimedia franchise Ensemble Stars!. He is a member of the idol unit Crazy:B, known for his polite speech and refined manners, which contrast with his strict upbringing in a traditional Japanese household. Kohaku excels in Japanese dance and music, often bringing a unique traditional flair to his performances. Despite his calm and collected exterior, he sometimes struggles with expressing his own desires. In the story, Kohaku plays an important role as both a performer and a supportive friend.