Okuninushi-no-Mikoto (Great Land Master) is Japan’s supreme deity of marriage and all human connections — not only romantic love, but also career bonds, family ties, health, and fortune. Enshrined at Izumo Taisha in Shimane Prefecture, he is popularly known as Daikoku-sama. His divine companion, Sukunahikona-no-Mikoto, shared the task of building the nation and is revered for wisdom, medicine, and the forging of partnerships.
Every year in the old lunar tenth month (called Kannazuki — “Month Without Gods” nationwide, but Kamiari-zuki — “Month With Gods” in Izumo), the deities of all Japan gather at Izumo Taisha to deliberate the fates and relationships of the coming year. This “divine conference” legend is the mythological basis for Izumo’s supreme status in marriage blessings.