The endless sky, the endless earth, the continent that holds everything in this world. At the center of it all was Marradian, the elven land of fertility and blessing. A land of hope, full of dreams, compassion, love and joy.

Heretics from other worlds use the "inter-world transfer device (gate)" He led the cursed dead to attack the human world. The fierce battle ends with a grim human victory. And the heretical wesen who masterminded it. She was buried thanks to the efforts of the Red Princess Artisia (Asha) and Harukaze Sakura and her friends.

Having successfully put down a rebellion in the elven kingdom of Marradian, Sakura Harukaze He was back to a peaceful life with Asha and his friend Yuzuha Okemure. The gate that's left behind is classified first class. It was supposed to be ... protected under the strict supervision of the association.

But...

The peace did not last long. An attack from Kingdick, a kingdom of giants (Gigantor) that was supposed to have been destroyed... An unprecedented crisis has come to the human world.