Aihara Airi♀

Yuma's little sister from a different father. She was conceived during her mother's NTR play. Her father gave her a picture of Yuma, telling her "If you're a good girl you'll be able to meet him some day". She grew up to be honest and sincere, just as her father told her to. Due to spending every day imagining the older brother she hadn't met, she gained a habit of delusions and passed out the minute she met the real thing, due to delusions running wild in her mind.