The Mikaboshi are the old island kings coming back for Datenseki. Ariu, crown prince, insect sorcery (Sumika), a body that can live with the stone. Japan wants the vein. They want Irishima and a foothold. Undersea habitat is Datenseki as architecture. Two Hishaku are still unnamed; this faction is not them.
Island: Irishima. Talks: 117–121. Habitat: undersea. Ariu: Ariu.