1girl, breasts, collarbone, cup, fate/grand_order, fate_(series), halterneck, holding, holding_cup, horns, japanese_clothes, kimono, looking_at_viewer, obi, oni_horns, parted_lips, purple_eyes, purple_hair, purple_kimono, red_background, revealing_clothes, sakazuki, sash, shuten_douji_(fate), small_breasts, smile, solo, sumi_(suumiko_)