Chaos Dragon: Sekiryuu Seneki

is a Japanese media franchise based on the Japanese role-playing game Red Dragon by Makoto Sanda, featuring characters created by Gen Urobuchi, Kinoko Nasu, Izuki Kogyoku, Simadoriru, and Ryōgo Narita.

An anime television series titled Chaos Dragon: Sekiryū Sen'eki (ケイオスドラゴン 赤竜戦役), produced by Silver Link and Connect, aired July 2015. AnimeLab has secured streaming rights in Australia & New Zealand. The franchise also includes a board game titled Chaos Dragon: Haō Shunjū and a smartphone game titled Chaos Dragon: Konton Senso, released in Q3 2015 for iOS and Android.

Plot
The story takes place during Imperial Era 3015. Donatia and Kouran, two countries fighting for supremacy over the world, are causing it to be torn apart due to the constant warfare and bloodshed. Amidst the strife, is the island country of Nil Kamui, which has lost its independence. The Red Dragon, the guardian deity of Nil Kamui, didn't protect the land though, as it had lost control of itself. Will the island country of Nil Kamui be able to regain its independence?

Chaos Dragon is based on the role-playing fiction project Red Dragon, a story which was created by five notable character designers: Gen Urobochi (Fate/Zero), Kinoko Nasu (Kara no Kyoukai), Iduki Kougyoku (Mimizuku to Yoru no Ou), Ryohgo Narita (Durarara!!), and Simadoriru (member of the Stripe Pattern doujin circle). The results of their tabletop role-playing game sessions over six days created material for a seven-volume light novel series.