ishigaki takashi, yuuki serina, fuuki iinchou seira, game asset, large variant set, non-web source, official art, self-datamine, variant set, 1girl, belt, blush, bracelet, breasts, earrings, formal clothes, jacket, jewelry, large breasts, long hair, nail polish, necklace, open mouth, pantyhose, pencil skirt, pink nails, purple eyes, red hair, simple background, skirt, skirt suit, solo, suit, tachi-e, teacher, transparent background, very long hair