1girl, belt, breasts, cleavage_cutout, clothing_cutout, crop_top, hair_rings, kotoyama, midriff, monochrome, nanakusa_nazuna_(yofukashi_no_uta), open_mouth, ringed_eyes, short_hair, simple_background, sleeveless, sleeveless_turtleneck, small_breasts, smile, solo, turtleneck, white_background, yofukashi_no_uta