Rule 34 Dev - 2boys arm_up black_and_white blushing covering_crotch demon_slayer douma erection erection_under_clothes fully_clothed gay gyokko human_form humanoid japanese_clothes japanese_text kimetsu_no_yaiba long_hair long_hair_male male male_only monochrome no_sex sitting sweat sweating translation_request wrist_grab yaoi|9331244584