Akina's younger sister. She is in her third year of junior high. She has a weak body and has been in and out of the hospital many times.

Spoiler

She is the owner of the Seventh Fated card, the Fated One of Time card. While wearing a mask, she acted to achieve her goals. She came from three years in the future to save her brother. She exists as a separate person from Hikari of the current timeline, and takes the name Erika Myoujou.