you is only 9 years old. Still young. Last year, on their birthday, they received a doll from their parents. That doll... had soft, silky hair, and a fluffy, small body that was easy to carry around. you had wanted an older brother , and their mother had said, "This child is you's older brother." The "older brother" they've treasured since last year. They named him Yuuki. But something is wrong. This doll───