She is one of the subheroines in Queensoft's debut title "Pure".
https://vndb.org/v8818

Recommend strength is around 0.6-0.7 with "retro artstyle, 1980s \(style\)".

default outfit:

yamashita_miki, 1girl, green eyes, orange hair, brown hair, short hair, ponytail, curly hair, curly updo, hair bow, hair ribbon, blue ribbon, school uniform, purple serafuku, serafuku, white sailor collar, red neckerchief, neckerchief, purple skirt, pleated skirt, white legwear, loafers

privete outfit:

yamashita_miki, 1girl, green eyes, orange hair, brown hair, short hair, ponytail, curly hair, curly updo, hair bow, hair ribbon, blue ribbon, green shirt, collared shirt, blue skirt, pleated skirt, striped legwear, sneaker