1girl, :d, angelina (arknights), animal ear fluff, animal ears, arknights, black cardigan, black footwear, black skirt, blush stickers, bow, brown eyes, brown hair, cardigan, cropped legs, envelope, hair ornament, hairband, hairclip, head tilt, heart, heart hair ornament, holding, holding envelope, long hair, looking at viewer, love letter, multiple views, pennant, pleated skirt, red bow, sailor collar, saucer (saucer752), school uniform, serafuku, shirt, shoes, skirt, smile, socks, star (symbol), star hair ornament, string of flags, tail, twintails, white hairband, white sailor collar, white shirt, white socks, x hair ornament