**Height:** 152 cm **Hometown:** Tokyo, Japan Always wearing headphones and with a deep love for the culture, Riina aims to become the very definition of a rock star. However, Riina lacks musical knowledge and experience with the genre, so she often comes across as a bit of a poser. Despite this, Riina’s commitment to becoming her ideal rockin’ idol self is strong. She admires Natsuki Kimura, and wants to become someone like her. Riina doesn’t like portraying a more feminine image at first. She says she'd prefer a purely rock star aesthetic, but she can't help herself and gravitates towards more cutesy looks. In more recent cards, she's started to come closer to the rock star image she loves; even learning to play guitar under Natsuki's tutelage. Initially having Riina admire Natsuki, both of them developed a very strong and mutual bond towards each other over time and are quite often seen together. Riina lives with her parents and seems to have a very close relationship with her family. Whether she has any siblings is unknown. In a Puchiderella line Riina mentions that at school she is fairly reserved, and she wants to her passionate side as an idol. Riina has confirmed that as a student, she is the type that crams before tests and then forgets the information afterwards. Riina has been shown to be very insecure about her lack of guitar skills and often worries that she cannot become a real rock idol because of it. Even so, Riina always comes to understand that with the power of her straightforward enthusiasm and determination, she can still be rockin’.