1girl, ass, black_hair, blue_eyes, closed_mouth, hiroki_(yyqw7151), looking_at_viewer, no_pants, one-piece_swimsuit, original, ponytail, shirt, short_hair, short_sleeves, sidelocks, simple_background, solo, standing, swimsuit, swimsuit_under_clothes, t-shirt, thighs, wading, water, white_background