1girl, arm_up, black_hair, blue_eyes, blue_one-piece_swimsuit, breasts, competition_swimsuit, drying, drying_hair, gridman_universe, groin, highleg, highleg_swimsuit, holding, holding_towel, looking_at_viewer, one-piece_swimsuit, parted_lips, r-binon, sitting, small_breasts, solo, ssss.gridman, swimsuit, takarada_rikka, thighs, towel, wet, wet_hair