she has known Mamoru since kindergarten, Mamoru knows everything about her, except for the object that Yūna looks at every night before bed - a photo of herself and Mamoru which she cherishes. It is hinted that she is in love with Mamoru, but is afraid to admit her love to him. She is shown to be jealous of Mamoru interacting with other girls as seen when she prevented Sawagashi and Tsubaki from holding his hands as they slept at the zoo. Voiced by: Ryōko Shintani (Japanese) Airi, a wealthy girl, is a classmate and friend of Mamoru and Yūna. She discourages any relationship between Yūna and Mamoru, because, according to her, childhood friends who become lovers are generally unsuccessful. However, this may be a ploy since she has feelings for Kagemori, whom she derisively calls 'Ahoru' ("Mamoron"). She occasionally gives Mamoru hints that she likes him, which he is oblivious to, and she vents her frustration by hitting Mamoru. Voiced by: Sachiko Kojima (Japanese) Tsubaki is a miko swordswoman. Her sword can cut anything but nata de coco. She was hired by the yakuza boss in order avenge his earlier defeat at Mamoru's hands. After finding out the truth about the yakuza boss and realizing she had been tricked, she exacts her revenge on him. She also decides to enter Mamoru's school to become more worldly. After Mamoru cheers her up when she was depressed about being old-fashioned, she develops feelings for him. Voiced by: Ai Shimizu (Japanese) Yamame is a ninja and a relative of Mamoru. She remembers Mamoru comforting her when she was little and is quite disappointed after seeing the glasses-wearing person he has become. When Mamoru saves her from Chin Panji, a Chinese master of Animal Style combat hired by the yakuza boss, she realizes that he hasn't really changed. The next day, Yamame transfers to his school. She is also responsible for Mamoru's fear of bears (he had protected her from a wild bear, but was attacked and injured by it). Voiced by: Erina Furukawa (Japanese) Hotaru is a ninja. She confesses her love to Mamoru when they first meet. She and her brother are scheming to defeat Mamoru (a member of the strongest ninja clan) in order to avenge their clan's disgrace in losing to Yamame at a ninja athletic meet. Her feelings for him prevent her from finishing off the wounded Mamoru