Diego no Kyojin  

ディエゴの巨神

The discovery of the New World has ushered in a new era of change. In Spinea, a young man named Diego was an expert in Onmyojutsu, which is illegal in his country. He was attacked by a mysterious woman who questioned the source of his powers, and even the Holy Church began to take notice of him. With no other options available, Diego decided to join a research expedition to the New World with his longtime friend Alvaro. Upon arriving at the New World, they encountered a Tree of Gold that towered above its surroundings, and the forests were guarded by colossi. There, waiting for them was Rera, who was imprisoned in a water prison. Captain Joaquin ordered Diego to use his Onmyojutsu to rescue her. However, when Rera awakened, Rozen appeared, the rider of the colossus "Tankamui." Now, it seems that Diego may find himself caught up in the great battle between the maritime nation and the natives.