Rule 34 Dev - 10s 1girl akimotsu_(akim_x) black_hair blush boku_no_hero_academia breasts cleavage collarbone female_focus greyscale highres jacket looking_at_viewer medium_breasts midriff monochrome navel open_clothes open_mouth pants ponytail solo sports_bra stomach sweat track_jacket track_pants track_suit walking yaoyorozu_momo|8197537023