Rule 34 Dev - 2boys black_hair blonde_hair blush choker demon_slayer gay grabbing_from_behind groping groping_from_behind kaigaku kimetsu_no_yaiba kimono male male_only muscular_male nipple_tweak open_clothes open_kimono pec_grasp pecs sweat thick_eyebrows upper_body yaoi zenitsu_agatsuma|5582543576