I also found another piece.
This blond hair character is AP character.
She is usually ten years old, but with magical talent, she can grow fast to the body of a high school student for only three hours.
The growing figure is very sexy and attracts attention because it attracts attention, but she does not like it, but since she met her as a childhood friend once in a growing shape, since she is adored as an older sister, she is setting to play with her childhood friend in this form.
https://www.pixiv.net/member_illust....st_id=70207506
https://www.pixiv.net/member_illust....st_id=68393279