1girl, ass, black_hair, blush, cameltoe, fate/grand_order, fate/kaleid_liner_prisma_illya, fate_(series), feather_hair_ornament, feathers, hair_ornament, hairclip, hugging_own_legs, knees_to_chest, knees_up, koucha_maru, leotard, long_hair, lying, magical_girl, miyu_edelfelt, on_back, purple_leotard, purple_sleeves, simple_background, solo, white_background