Shinra dominated over monsters that existed thanks to mana. As monsters needed to gain spiritual energy, they cooperated with people. Shinra lived with a lady named Ruri in a forest. He had a stable life until he was asked to care about a pretty maiden, Alessa. She was homeless and only had a dragon by her side. Shinra felt pity and gave shelter to Alessa.
Shinra tried to show Alessa the best parts of the universe. An adventure of three people and a dragon began.