Himeno is Ringo's half-sister. She lived with her mother and her father until Ringo's mother drove them away from their house. She and Ringo share the same father, and have different mothers. She has seven younger siblings: four brothers and three sisters. She has top grades and works at part-time jobs to support her siblings. Himeno won the miss Otogi beauty contest.

She is kind and has quiet personality. Her character was based on Snow White.