harukan tiusu, lutonada (arknights), arknights, highres, 1girl, animal ears, braid, braided ponytail, brown background, coat, cropped torso, ear piercing, earclip, extra ears, facing viewer, green coat, hair intakes, hair ornament, hairclip, long hair, looking at viewer, mouse ears, mouse girl, neckerchief, open clothes, open coat, parted lips, piercing, purple eyes, purple hair, shirt, short sleeves, solo, upper body, white background, white shirt, yellow neckerchief