The Shadow Comes Forth

S1, E1: Young, impulsive and adventurous Shu lives a peaceful life in Talta Village, sharing his love of all things mechanical with his friends. But the peace is about to be shattered as two mysterious warriors, Zola and Jiro, arrive. The village is subsequently attacked by the Grankingdom, a land whose sole desire is to take over the world using both Shadow power and machines. With his village hanging in the balance, Shu awakens the legendary Blue Dragon, a Shadow of incredible power and strength.