She's extremely shy and has trouble expressing her emotions, which is why she usually often covers her face with a sketchbook (dubbed the "Rina-chan Board") with a drawing of her face with the appropriate facial expression in pink marker.
Rather than her uniform blazer, she wears a bluehoodie with sleeves past fingers with the shade of blue depending on the season (cyan/light blue for summer and dark blue for winter) and always carries a marker on her pocket.
Rina is really good with technology and "creating things". She even created an electronic version of the Rina-chan Board called "Auto Emotion Convert Rina-chan Board" which consists of a head-mounted display with an outwards-facing screen that she wears on-stage (since dancing requires both her hands to be free). She's also often seen with other gadgets such as a quadcopter or just working on a tablet or laptop. As a school idol, she hopes that people will cheer for her so she can show everyone her real face with a true smile.
