Kyōgoku can be obtained by having Yorimitsu (Lancer) reach Bond Level 10.
When equipped to Yorimitsu (Lancer) only, while that servant is on the filed, increase Quick & Buster Card effectiveness by 10% for all allies
Kyōgoku is an exclusive CE to Yorimitsu (Lancer, Summer 2017).
Rashoumon event (Ibaraki Douji event)
Murder at the Kogetsukan
Inheritance of Glory
Fate Grand Order Farming Items
Berserker Piece
Best Craft Essence: Craft Essence Tier List
Phoenix Plume (Phoenix Feather)
Dragon Fang
Sakata Kintoki (Berserker)
Magic Gem of Bows
Ereshkigal
Arthur Pendragon(Prototype)
Gorgon
Black Holy Grail (The Black Grail)