Because of this belief, she denies any attraction to him, even to herself. But when he confesses his feelings to her, she returned them, and at the end of the series she totally reversed her way of thinking--looks are no longer a major factor to start a relationship but inner beauty--surprising everyone, especially Rika, saying that it sounds like a joke from her. Another one of Ayumi's friends and classmates, Koyoi has an open brother complex with her brother Yoshihiko, which stresses him a lot. For a while when Misao started hanging around, she, along with Nao Chikura, stops walking home with Ayumi. Since her brother likes Misaki, a popular and attractive girl, she regards her as a "Final Boss" that she must defeat. She also quotes that Misaki's chest is a "truly evil power." Seemingly the most level-headed of the group, Rika (or Doba-chan to her closest friends) seems to enjoy teasing others. A well known tomboy, she excels in athletics and has been stated to be domineering. She is in the same grade as Ayumi. She became close to tennis player Haruto Terai when he started physical training with her, and over time became attracted to him, but did not give him that impression at first, thinking that was all there was to have a relationship. However, after Kei explained to her about what boys think and feel, Rika became more overt about her feelings, and surprised Haruto with a kiss, and furthermore, after the runaway incident by some of the boys, she admits that if Haruto also ran away, she "absolutely will not like it". Another of Ayumi's friends and classmates, Nao is somewhat envious of the attention Kei is getting. Along with Koyoi, she, for a while, stops walking home with Ayumi for fear of Misao. Being a member of the art club, she comes to admire the artist who made the painting of a Sakura tree, Renjou Yukito, and after meeting him, she asked him to assist her in her painting. However, upon his graduation, he left Japan, leaving her broken-hearted. When she learns of Hiroyuki Sogabe's feelings towards her, she became close to him. But it is hinted that she still holds strong feelings towards Yukito at the end of the series and it is stated by the author herself that whether Chikura has chosen Sogabe over Yukito or retain her feelings for Yukito