crystal maiden (series), covered pussy, artist request, game cg, official art, variant set, 1girl, althea (crystal maidens), artistic error, bare arms, bare hips, bare shoulders, blonde hair, book, bra, breasts, closed mouth, full body, glasses, green bra, green eyes, green panties, hair over shoulder, holding, holding book, navel, panties, pentagram, see-through clothes, see-through panties, solo, transparent background, underwear