A character named Baku is a purple tapir with the ability to fly and is Kuromis sidekick. He has a crush on Kuromi, but she often abuses him physically despite loving him. They have a master-pet relationship. Baku keeps a journal of his moments with Kuromi, which Hiiragi burns in the first season but he retrieves it in the second season when they escape from jail. His birthday is on February 29th. The name "Baku" is a pun in Japanese that could mean either a tapir or a dream-eating creature of mythology. In one episode, Baku has a crush on Uta. He also shows a conscience by delivering newspapers and giving rides to children. Baku can sniff out Black Notes, which Kuromi skewers with a magical stick before he eats them for safekeeping. Baku first met Kuromi at a beach in Mari Land. His catchphrase is "Zona" at the end of his sentences, common among anime characters.