Rule 34 Dev - black_hair blush demon_slayer facial_markings japanese_clothes kimetsu_no_yaiba kimono long_hair long_hair_male looking_away male male_only michikatsu_tsugikuni muscular muscular_male no_underwear obi off_shoulder open_kimono pecs ponytail reclining solo sweat tebukuro216 very_long_hair|6521843304