The settlers on Ryusei established one primary settlement and several smaller outposts. The total Human population on Ryusei was 2000 at establishment.
Asahikawa is the primary settlement on Ryusei.
Tatsu-no-su serves as the spaceport and primary transportation hub for Ryusei. This settlements is the main link between Asahikawa and the research outposts scattered around the planet.
Toudaiyama is a research outpost located on the Toudaiyama (lighthouse mountain) peninsula. The place is named after the mountain sitting at the tip of the peninsula. The inhabitants are planning on constructing an observatory there.
Kazankyo is a research outpost located near an active volcano chain. Analysts are currently establishing the feasibility of using the volcanoes to generate power.
Nakajima is one of two research outposts situated on the island chain off the coast of the main continent. Nakajima is currently the largest research outpost. This is due to the partial evacuation of Umi-no-nai. In the wake of the incident at Umi-no-nai, most research at Nakajima has been put on hold. Most of the activity at Nakajima is on assisting the recovery efforts at the other outpost.
Umi-no-nao was intended to be the second research outpost on the same island chain as Nakajima. Unfortunately, the guidance systems for the drop pods malfunctioned during descent. One landed off course but still on the island. The other two pods landed off the coast - one in shallow waters, the other went far deeper. Survivors from the drowned pods have largely relocated to Nakajima. The remainder are currently working to salvage as much equipment from the drowned pods as possible.
Investigations into what caused the malfunctions are still ongoing.