1boy 6tygu akaza_(kimetsu_no_yaiba) backlighting barefoot bead_anklet between_legs colored_eyelashes facial_mark facial_tattoo fetal_position floating from_behind from_below full-body_tattoo full_body grey_background grey_hair hand_between_legs hand_on_own_arm hand_up highres kimetsu_no_yaiba limited_palette looking_at_viewer male_focus no_jacket pants pink_eyes pink_hair red_pants sash self_hug short_hair sideways_glance simple_background soles solo tassel tattoo text_in_eyes topless_male