Dragon Crisis!

Kisaragi Ryuji's life was relatively ordinary until his second cousin Eriko returned. During this time, Ryuji and Eriko managed to get their hands on a relic box from a black market dealer. Inside the box, they found a young red dragon girl named Rose, who became a priority target for an unknown black organization. Ryuji decided to use his abilities as a relic handler to safeguard Rose.