1boy animal bangs black_fur black_hair black_jacket black_pants boy_on_top claws closed_eyes covered_mouth dog facial_mark fluffy forehead_mark full_body fushiguro_megumi gakuran hair_between_eyes high_collar highres jacket jujutsu_kaisen legs_together male_focus pants phsm school_uniform short_hair simple_background sleeping snout spiked_hair tail white_background white_fur