Rule 34 Dev - 2girls artist_request boxing boxing_gloves breasts clenched_teeth fight footwear glasses gloves greyscale hair_ornament hajime_no_ippo heels high_heels human human_only iimura_mari large_breasts mashiba_kumi medium_breasts monochrome motion_lines multiple_girls naked_footwear naked_heels nude punch showing_teeth sidelocks watermark|2031688496