1girl, 2023, arm_support, ass, blue_eyes, blue_hair, blue_leotard, breasts, fins, gloves, happy_new_year, kiria_ai, leotard, long_hair, medium_breasts, mermaid, monster_girl, monsterification, new_year, original, playboy_bunny, ribbon, smile, solo, strapless, strapless_leotard, transparent_background