(瀬奈 りか,
Sena Rika)
Voiced by: Yukari Fukui (Japanese), Debora Rabbai (English)
Sweet and gentle Rika is a gifted seamstress and craftswoman. A self-effacing person, Rika considers her life as average, and the least distinguished among her friends, but she is happy to be behind the scenes. She works on costumes for school plays and events. She was best friends with Aya since childhood, and she and Aya have a strange dynamic where Aya will do something selfish towards Rika, but Rika's sheer goodness will shame Aya ... and the cycle continues.
At some point before the cultural festival, Yukino asked Rika if she had a special someone in mind, and Rika responded to with a denial and blush. Yukino eventually realizes that Rika has a crush on Aya's older brother Kyo when she again blushed while talking to him. However, Aya has been aware of her friend's and brother's mutual infatuation for some time, and after the cultural festival was over, she supposedly stayed behind to do some work so that Rika and her brother would have dinner without her.
During Rika's own special chapter, there are a few things revealed about her. Her family is much like Yukino's, as Rika has a kid brother and sister. They love their older sister very much, but in an attempt to repay her for always cooking for them, they accidentally spill the cake batter over Rika. Of course, both Yukino and Rika adore their cute little siblings. Also, she is very observant as a friend, noting that until Miyazawa came into Arima's life, he always seemed a little sad. Interestly, she is the only person that Tsubasa has never scratched during her moody times. Kyo, who is also infatuated with Rika, has been watching over Aya and Rika since they were very young. Although Rika is law-abiding, indecisive and seemingly boring, she was very confrontational when she found out Kyo was getting picked on. As a kindergartener, she wielded a bat to save Kyo from the high school bully. Aya realized after that incident, that Rika was in fact much scarier than herself, as she even had blood splashed on her face. However, both Kyo and Rika are very shy, and it is difficult for the two to outright articulate their feelings. By the end of the chapter, Rika and Kyo are shown holding hands bashfully.
Though Rika sees herself as the most average and unimpressive member of the group, Tsubaki points out that Rika is actually the most popular with the "regular guys," i.e. the kind that would never tell a girl how they feel. The men in the classroom tense up, confirming Tsubaki's theory. As such, the only one who sees Rika as unimpressive is Rika herself.
Source:
Wikipedia
