1girl, alcohol, alternate costume, arknights, back tattoo, bare shoulders, blush, closed mouth, cup, day, from behind, green hair, holding, holding cup, horns, hoshiguma (arknights), japanese clothes, kimono, long hair, looking at viewer, looking back, off shoulder, open clothes, open kimono, outdoors, partial commentary, poni (poni arknights), sakazuki, sake, single horn, smile, snowing, solo, tattoo, upper body, very long hair, yellow eyes