Rule 34 Dev - 1boy absurdres aura black_hair demon fingernails formal hat highres inking kibutsuji_muzan kimetsu_no_yaiba long_sleeves looking_at_viewer male_focus manip medium_hair necktie open_mouth parted_lips partially_colored patterned portrait red_background red_eyes screentones sharp_fingernails shirt short_hair slit_pupils solo suit|11432113173