Mary from the Hanako-san VS Strong Exorcist H-Anime.
The anime is based on CG set by loopsot in which Hanako was featured. The other girls seems to be anime exclusive as far as I know.
Now in Illustrious
Description
Keywords: marysanilus, 1girl, solo, white hair, long hair, frilled hairband, green eyes, frilled collar, bowtie, frilled dress, dress bow, long sleeves, frilled socks, red mary janes,
If her dress turns up red, add the white color tag.