Riina Tada channels a fiery passion for rock music, blending raw enthusiasm with inexperience as she strives to embody a rockstar persona. Her ambition often clashes with her surface-level grasp of the genre’s intricacies, fueling both earnest efforts and humorous missteps. Born June 30 in Tokyo, she stands 152 cm tall with aquamarine eyes, beige hair, and measurements of 80-55-81 cm (blood type A). Her hobbies revolve around immersing herself in rock music, though her understanding remains rudimentary. Initially informal with the Producer, she adopts respectful titles only after mutual trust is forged through training.

In the 2015 anime, Riina forges the unit * (Asterisk) with Miku Maekawa, navigating early clashes to cultivate a resilient partnership. A pivotal moment arises when she prepares fried fish for Miku, unaware of her bandmate’s inability to eat fish, reflecting their evolving rapport. Later, Natsuki Kimura joins the unit, prompting its rebranding as * (Asterisk) with NatsuNana after Riina, drawn to Natsuki’s magnetic rockstar aura, initially seeks to create a separate unit with her.

Beyond anime, Riina and Natsuki channel their shared passion into Rock the Beat, while her collaborative spirit extends to groups like Masque:Rade (with Mayu Sakuma and others), Rapiéçage (alongside Mirei Hayasaka), and Ao no Gakudan ~Azul Música~ (featuring Rin Shibuya and Ranko Kanzaki). These ventures highlight her adaptability and expanding ties within the idol sphere.

Her growth centers on persistence: she deepens her bond with Natsuki, evolving from admiration to mentorship, while collaborations with peers like Shizuka Mogami and Julia underscore her widening influence. Though self-conscious about perceptions of being a "poser," her relentless drive to hone her craft and nurture genuine connections anchors her narrative, proving dedication can bridge gaps between aspiration and authenticity.