her friend. Through out the series, Sana looks up to Rei as a surrogate father as Rei looks up to her as his own child. is Akito's soft-spoken and smart best friend at school. Although usually gentle, when Tsuyoshi gets extremely angry, he flies into a rage and begins to attack everything - and usually only Akito can calm him. Tsuyoshi plays a very background role in the manga, but at the beginning he is Akito's rival for Sana's love. Later, his parents divorce, and as , he has to cope with being a father figure as well as a big brother to his little sister. Aya is one of Sana's friends, and later Tsuyoshi's girlfriend. She is a quiet and sweet girl, with a good deal of common sense, but when angry or jealous she can become very dangerous. Aya and Tsuyoshi become a sickeningly sweet "love-love" couple. Fuka is introduced as a classmate when Sana and her classmates begin junior high school. Fuka just moved back to Tokyo after living in Osaka, and she and Sana become best friends. They start to meet at the bathroom, where Fuka complains about cutting her hair too short. Fuka explains that some people thinks she looks like Sana. It is revealed that Akito went to kindergarten with Fuka, and kissed her when they were five years old. Although Fuka initially hates Akito for stealing her first kiss, after getting to know him better, she is impressed by his blunt honesty and logical point-of-view. Fuka's personality is very similar to Sana's, which is why Tsuyoshi probably thinks that she is Akito's type. Fuka dates Akito when Sana goes to shoot a movie. Eventually, Fuka realizes that Akito really loves Sana, so she breaks up with him. Asides from the fact that they dated, Fuka was also the other girl besides Sana to whom Akito has said "I don't hate you" to. Although their relationship did not work out, Akito and Fuka genuinely appreciated and respected each other. She was in love boy named Yuta Takaishi, but they broke up because Akito kissed Fuka. When they meet again after while she said that she won't want to start relationship with him, but later Sana and Akito found out Takaishi's phone number and called him and get his phone number and address up and gave it to Fuka. First she was angry and embarrassed,