Dia Kurosawa/Yohane the Parhelion

Dia (ダイヤ Dia) is one of the main characters in Yohane the Parhelion.

Background
A woman who works as a Chief in Staff for the Numazu Administrative Bureau, Dia also works as a costumed alter ego named Scarlet Delta.

Etymology

 * Dia's given name means "diamond" and, like her sister Ruby, is a gem.

Trivia

 * Dia's alter ego is a reference to the costumed heroes such as Kamen Rider.
 * It should be noted that this was also a nod to her voice actress' previous involvement to various Toei-produced Tokusatsu such as Yoko Usami/Yellow Buster from Tokumei Sentai Go-Busters and Electronic Wave Humanoid Tackle from Super Hero Taisen Otsu: Heroo! Answers.