Rule 34 Dev - 1boy adam's_apple cheekbones collared_shirt formal_clothes frown genandnak greyscale head_tilt kiryu_kazuma long_sideburns looking_at_viewer male_focus monochrome pectoral_cleavage pectorals ryuu_ga_gotoku_(series) ryuu_ga_gotoku_0 shirt short_hair sideburns solo suit thick_eyebrows tsurime upper_body|21987366219