She is the ex-girlfriend of Ukyou Asahina.
Quite the opposite of Ema, her personality is a bit double-sided, where she can play a fool out of Ukyo. She can be very demanding and very spoiled if she doesn't get what she wants.
She is a little bit taller but overall looks like Ema Hinata. They have the same hair length, and look petite.
In Ukyo's route his past has been revealed and it was really entertaining. Somehow some of his personalities have been changed from time. On the part, after he knew that Reiko only started to date him just because he's a child of Miwa, rages him. After that meeting, he met Ema, who greatly looks like Reiko. In a fit of rage, Ukyo nearly hurt Ema, believing her to be Reiko, until she slapped him back to his senses. Once calmed down, he reveals his past with Reiko.
- She does not exist in the anime.
- She dated Ukyo because of his mother.