Ukoojisi Shrine can be found in the West Necluda Sky and is unlocked with a Shrine Quest.
Shrine Location
Ukoojisi Shrine is located at 1458, -2164, 0585 in the West Necluda Sky. To reach it, go to the Great Sky Island and use a Wing from there to go southeast. You can find Wings near Gutanbac Shrine and Nachoya Shrine. When your Wing is above the Dueling Peaks, you can jump off of the Wing and use a combination of gliding and skydiving to reach the islands of the West Necluda Sky Archipelago, where this shrine is located.
Rauru's Blessing
The chest in the shrine contains a random Zonaite Shield.