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
Best Craft Essence: Craft Essence Tier List
Best Servants [★4]: 4 Star Tier List
NP Charge & NP Seal - Craft Essences
Infinity Gear (Eternal Gear), How to farm Eternal Gear
Secret Gem of Cavalry
Azoth Blade
Heroic Spirit Portrait: Jeanne d'Arc
Ereshkigal
Arthur Pendragon(Prototype)
Gorgon
Black Holy Grail (The Black Grail)