Manai Shrine is another of the 6 shrine pilgrimage around the Ou District of Izumo. It is also listed in both the Izumo Fudoki and the Engishiki.
Prior to the Meiji Period it was known as Izanagi-sha, which tells us who the primary kami is. It is not far from Kamosu Shrine, another shrine connected to Izanagi's flight from Yomi.
Also enshrined here is Amatsuhikone, one of the 5 male kami created by Susano out of Amaterasu's jewels. The most well known of the 5 is Amenooshimimi, the father of Ninigi.
There are three secondary shrines in the grounds, though no information is available about who they enshrine except one has some small foxes suggesting Inari.