Gesu Shota Yusha to Michibikare Shi Hitozuma-Tachi

The continent of Arras.
On this continent, the war between demons and humans has been going on. A long time ago, a powerful Demon King appeared to lead the Demon Tribe. A time when humans were plunged into fear and despair.
One man and three women defeated the Demon King and led the world to peace. It is said that the four had a strange emblem on the back of their hands.