1girl, all_fours, ass, back, bare_shoulders, black_buruma, blonde_hair, buruma, clothes_writing, fat_mons, feet_out_of_frame, from_behind, huyumitsu, indoors, kneepits, long_hair, numbered, on_bed, original, ponytail, shirt, sleeveless, sleeveless_shirt, solo, sportswear, thighs