Rule 34 Dev - 1boy black_background blood blood_on_face closed_mouth eyelashes from_behind hagoro_(856_kmt) highres kibutsuji_muzan kibutsuji_muzan_(combat) kimetsu_no_yaiba lips long_hair looking_at_viewer male_focus monster_boy red_eyes scar sideways_glance slit_pupils solo spoilers tentacles upper_body veins white_hair|15733880487