sothe_(groom)_(fire_emblem)
Tag used for Sothe (Fire Emblem) from Fire Emblem specifically when dressed in his bridal-themed groom suit from the Fire Emblem Heroes 2020 Bridal Beloveds banner, he forms a Duo Unit alongside Micaiah (Fire Emblem) (in her own bridal-themed attire) officially known as "Micaiah: Dawn Wind's Duo".
Note that it's possible (especially for older artwork), to depict Sothe in a groom suit without it being the one described above, in which case this tag should not be used.