At Utouzaka in the Battle of Sekigahara, in A.D. 1600. A military commander Shimazu Toyohisa and his unit adopted a strategy at the risk of their lives because he needed his uncle Shimazu Yoshihiro to return to their homeland Satsuma for their future. As the result, even though Toyohisa saved his uncle, he was critically injured and wandered in the mountain. But suddenly, he passed into the strange space.

Toyohisa is found by elven little brothers, they take him near an old castle. A warlord Oda Nobunaga from A.D. 1582, and a military commander Nasu no Yoichi from 12th century had arrived in this world before Toyohisa, they treat his injury in the castle where they live. People of this world has called the Drifter who came from other world like them. Meanwhile, a patrol unit of Orte Empire attacks the elven village where little brothers live, because they helped Toyohisa as one of Drifters.

The Black King's army is marching on the Northern Wall of Carneades while the Octobrists attempt to convince Carneades' defenders to hand over control of the defensive force to Hannibal and Scipio. This will be the Ends debut on the battlefield.

Toyohisa, Nobunaga and Yoichi catch a female priest of the Octobrist Organization Olminu who has observed them. They demand of her what's going on now. She appeals for the menace of the Ends who are hostile to the Drifters and people of this world.

As the lord's suppression force marches into the seemingly abandoned Elven village, a trap laid by the Drifters waits to be sprung. As a result of the clash, the lack of Elven women in the village is explained, and the flames of vengeance ignited.

Toyohisa dashed into the enemy's castle to rescue elf-girls without any hesitation. But he fires up at the sight that he saw there, then he tries to kill all the enemy in the castle. Meanwhile, Count Saint-Germi appears in the House of Lords with his attendants in Verlina, capital city of Orte Empire.