- This SIGNI's name may refer to Ryūgū-jō, an undersea palace of the dragon god of the sea, Ryujin.
- Notably the SIGNI's red and white color scheme matches with the legend of the palace being made of red and white coral.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.