miyamoto_musashi_(traveling_outfit)_(fate)
Heroic Spirit Traveling Outfit Craft Essence (fate) for Miyamoto Musashi. Interestingly, she also wears this outfit in the Chaldea Kitchen Truck CE (post #3268475).
Part of a series of 39 Fate/Grand Order Summer 2018 Craft Essences celebrating the game's third anniversary, each featuring a different Servant "on vacation" in a location unrelated to their historical legend and wearing clothing appropriate to the area.