1girl, d, animal_ears, arm_up, black_shirt, black_skirt, breasts, buttons, cardigan, cat_ears, crop_top, fangs, green_eyes, long_hair, looking_at_viewer, low_twintails, lying, medium_breasts, midriff, miniskirt, navel, neckerchief, nijisanji, nijisanji_kr, on_back, open_mouth, pink_hair, pleated_skirt, school_uniform, shirt, siose_tamotsu, skirt, smile, solo, stomach, thighs, twintails, undershirt, virtual_youtuber, yang_nari, yang_nari_(1st_costume), yellow_cardigan