Rule 34 Dev - 1boy black_hair brushing_hair character_name collarbone collared_shirt comb company_name copyright_name ffc greyscale greyscale_with_colored_background hand_in_own_hair highres holding holding_comb logo male_focus mature_male monochrome official_art purple_background shirt short_hair sideburns signature simple_background sleeves_rolled_up smile solo umineko_no_naku_koro_ni ushiromiya_rudolf v-shaped_eyebrows|21912288840