Though shy and unable to express herself well, Rina Tennoji decides to join Nijigasaki High School Idol Club for the sake of her best friend, Ai Miyashita. Despite her inability to show her emotions through facial expressions, Rina conveys her feelings to her friends and fans using her "Rina-chan Board." This invention allows Rina to show facial expressions on either her sketchbook paper or on her electronic board during performances or when doing tasks that require both hands. Rina's voice is high-pitched and cutesy, with the most power being in her high tones. Rina's voice is a bit nasally, and is full of emotion. Remember: Rina cannot emote without her board and her voice, so make sure to let your emotions shine through when singing!