Sonorous Seashell

Sonorous Seashell (響きの貝殻) is a living artifact in the possession of Olivert Reise Arnor.

Background
Bracers discovered the artifact in a ruin in Erebonia about S.1196. The artifact is able to transfer encrypted orbal communications over an ultra long distance under every possible condition. Per Toval Randonneur's suggestion he had the artifact turned into a router and paired it with a custom-made application by the Epstein Foundation to realise the Round of Seven, enabling the ARCUS II network.