Rule 34 Dev - 2boys akaza_(kimetsu_no_yaiba) anal anal_sex ass bite_marks bruised completely_nude curly_hair demon_slayer doggy_style from_behind gay hickey_marks kimetsu_no_yaiba long_hair_male male male_only monochrome muscular muscular_male nude penis rengoku_kyoujurou scars two_tone_hair wrist_grab x-ray yaoi|5779924688