1girl, ahoge, animal ears, bangs, black dress, blush, breasts, capelet, clip studio paint (medium), closed mouth, crystal, dress, feet out of frame, grey capelet, grey hair, indoors, jewelry, lenserd, long sleeves, looking to the side, medium hair, mouse ears, mouse girl, mouse tail, nazrin, pendant, red eyes, shirt, sitting, sitting on stairs, small breasts, smile, solo, stairs, tail, touhou, v-shaped eyebrows, white shirt, window