Eriri is a lovely, small girl with long, straight blonde hair that she typically ties up in twin tails and decorates with two blue ribbons. She probably inherited her very pale skin and light blue eyes from her father. A tiny fang that is attached to her lip can be seen in the anime when her face is shown in close-up. Utaha Kasumigaoka sometimes makes fun of Eriri for having small breasts. Her physique and facial features strongly resemble Sayuri Sawamura, Eriri’s mother. Typically, she is shown wearing her school uniform or casual attire. She is dressed in a green tracksuit and glasses at home.