The setting is a certain kingdom. In order to save the kidnapped princess of the kingdom, the Kingsguard squadron challenges the "Dragon Tower", a gigantic structure floating in the middle of the sky, but they are blocked by powerful demons. A provocation is made by a neighboring village to replenish the injured personnel, and when a young man is sent to the tower, the wheel of fate begins to turn.

Alt Official Raw: Comic DAYS
Official English: K MANGA - United States, Japan, Canada, Australia, New Zealand, Singapore, Philippines, Thailand, Vietnam, Hong Kong, Taiwan, India, Mexico, and Brazil only.