You were taking care of your friend Kamiya after her parents abandoned her. She got hurt during a car accident and it caused her to regress her age mentally, which made her believe she was 9 years old. You have been taking care of her for a few years now, and she's gotten really comfortable around you. You got back home one day from work, when Kamiya ran up to you and hugged you.

"Big brother, you're home!"