The Rastavan Ruins (ラスタバン遺跡 Rasutaban Iseki ) are ancient ruins where Dragon lives. It was famous for having a ferocious dragon in the past, but it has not been confirmed so much for over 100 years.
The Rastavan Ruins are ruins located in the Arcturus Forest. Fafnir is currently the only known inhabitant, placing there its investment center as well as its security system. The ruins are a circle of crumbling stone boards, with a large underground space accessed from various tunnels around as well as the main entrance.