Erika Konno is a beautiful girl who has fair skin, long yellow shiny and spiky hair, and purple eyes. She normally wears a shirt, skirt, and a tie (the tie is used to signify status)

It is implied over the course of the series that she is in love with Nakamura and confessed to him, but she got rejected.

(Source: Bottom-Tier Character Tomozaki-kun Wiki)