Tag used for Sothis from Fire Emblem, specifically when dressed in her winter attire from the Fire Emblem Heroes 2019 Glorious Gifts banner.
Can typically be identified thanks to the attire's characteristics: a red outfit with a green skirt resembling a christmas tree, a green ribbon along the center of her torso depicting a golden star, a golden tiara adorned with stars, two red detached sleeves with fur trim on her forearms, and a red choker with a christmas wreath shaped clasp.
Note that it's possible (especially for older artwork), to depict Sothis in a winter outfit without it being the one described above, in which case this tag should not be used.
This tag implicates sothis_(fire_emblem) (learn more).