Rule 34 Dev - 1boy aqua_eyes aqua_hair black_hair black_jacket buttons demon_slayer_uniform gradient_hair grey_background hair_between_eyes highres jacket japanese_clothes kimetsu_no_yaiba long_hair long_sleeves male_focus maruno multicolored_hair parted_lips sidelocks solo tokitou_muichirou twitter_username upper_body|23626181826