Tidal Jewels that Unlock the Sea Boundary

is the Noble Phantasm of Azumi-no-isora.
It is said that the Sea Boundary is the path that connects the earth and the sea, and that it was blocked when and parted company in mythology. 
But were not the jewels that split the sea and opened the way the very key to the gate that closed this Boundary? 
Watatsumi-no-Miya, where Toyotama-hime resides, is the Eternal World, meaning the world of the gods, and if the gate could be opened and connected, the powerful forces that abound there would be realized.
When Azumi-no-isora holds up the jewels, the gate to the Eternal World opens. 
Torii appear one after another out of the sea, each one leading to Watatsumi-no-miya. 
As the magical power emitted from the jewels passes through one torii gate after another, its power increases, and in the end it becomes a maelstrom that engulfs all enemies...
It is as if the legend of the Noble Phantasm that once drowned tens of thousands of enemy soldiers in the sea is being recreated in the present day.Fate/Grand Order - Azumi-no-isora Profile - Translated by UdonSamurai
==Starlit Marmalade==
When Azumi-no-Isora transforms into Sirius, their Noble Phantasm sublimates into .
It is Sirius’ greatest offensive Noble Phantasm, which transforms their body into a mass of energy, striking enemies with the speed and force of a shooting star by passing through the gate of the Eternal World. The unleashed brilliance, seemingly reducing all to a primal state, evokes the image of a swirling vortex of stars and marmalade through a telescope lens. Fate/Grand Order - Azumi-no-isora Profile - Translated by UdonSamurai
==References==
Category:Noble Phantasms
Category:A rank Noble Phantasms
Category:Anti-Army Noble Phantasms
Category:Noble Phantasms introduced in Fate/Grand Order