Yui Rio maintains her canon design of deep red hair, put into a ponytail and burgundy eyes. She wears the default uniform and has pale skin. She has a breast size of 0.5.
Yui Rio is perverted. She always tries to get fucked at any time of day and by anyone, no matter the gender. She has many friends which somehow manage to find the less perverted side to her.
Hayato Haruki - Her crush. They both like each other, but neither realizes it.
Yuna Hina - Her bet friend. Yui often teases her for her lack of humor.