Fate/GO NEWS (JP) on Twitter: "[Event] New outfits for Edmond Dantes, Gilgamesh (Caster), and Robin Hood can be unlocked by clearing quests that are unlocked by clearing the Main Quest and having
not always wear vest — FGO servants in Arcana Emperor Arcana Gilgamesh...
Gilgamesh Caster Fate/ Grand Order FGO Character Fan Card | eBay