... 1boy 1girl ^_^ age_regression aged_down alternate_universe artist_name bamboo bare_shoulders bit_gag black_hair blank_speech_bubble blue_eyes blush child closed_eyes comic demon_slayer_uniform female_child flower-shaped_pupils gag gagged grey_background hair_pulled_back hakuji_(kimetsu_no_yaiba) happy high_five highres holding_another's_finger jacket japanese_clothes jiuyu0 kimetsu_no_yaiba kimono koyuki_(kimetsu_no_yaiba) long_sleeves looking_at_another nihongami off_shoulder pink_kimono polka_dot polka_dot_kimono red_eyes short_hair simple_background size_difference speech_bubble spoken_ellipsis sweat symbol-shaped_pupils updo white_jacket wide_sleeves