blue sealad, harmonie (arknights), harmonie (invitation) (arknights), arknights, absurdres, commentary, highres, 1girl, animal ear fluff, animal ears, artist name, black necktie, blush, bookshelf, braid, cape, cat ears, cat girl, collared shirt, crossed legs, dated, green eyes, green hair, long hair, long sleeves, looking at viewer, necktie, official alternate costume, pantyhose, plaid clothes, plaid skirt, pleated skirt, shirt, sitting, skirt, solo, tail, tongue, tongue out, white pantyhose