Tag used for Eirika from Fire Emblem, specifically when dressed in her winter attire from the Fire Emblem Heroes 2018 Gifts of Winter banner.
Can typically be identified thanks to the attire's characteristics: a red dress with a white skirt and golden buttons, a brooch with a Star shape, white thigh high boots with red soles, a santa hat, a red fur trim cape, and red fir trim gloves.
May be depicted with her weapon, a golden staff with a lantern and a red and white ribbon.
Note that it's possible (especially for older artwork), to depict Eirika in a winter outfit without it being the one described above, in which case this tag should not be used.
This tag implicates eirika_(fire_emblem) (learn more).