Rule 34 Dev - 2boys age_difference back_muscles bara comic funny hospital imai_cosmo japanese_text kengan_(series) kengan_ashura male male_only mature_male monochrome muscular muscular_male nervous nude older_dom_younger_sub older_man_and_younger_boy on_back redjack_036 sitting_on_person smile sweat sweatdrop wakatsuki_takeshi yaoi|8082137208