Eleven years have passed since the fierce war between humans and demons ended in a ceasefire... and now, an era of “human-demon coexistence” has begun. During the war, a young man named Eita was the wielder of the “Shiki-no-To,” a sword developed as a weapon of mass destruction. Now, he scrapes by doing day labor while searching for his long-lost sister, Kanna. But one day, when he saves a familiar young demon named David from being attacked by demon soldiers, Eita is once again branded a demon slayer—and becomes a wanted man. Thus begins the wandering journey of Eita and the little demon, hunted and on the run!

Lavinia was framed by her beloved father and labeled a villainous young lady. To raise funds for her revenge, she chose Hotel Alheim, a converted Demon King's castle. She tried to seduce the handsome young general manager, Ruudbert, a descendant of the Demon King, and seize management rights, but her attempt failed quickly. However, Lavinia, who aims to rise to power, uses her "knowledge of evil" to solve the problems of guests one after another. A tale of ambition and humanity unfolds at the Demon King's hotel! (Source: Kadokawa, translated)

After marrying a handsome duke on the very day they met, she is suddenly murdered by someone unknown…? But she refuses to lose or give up until she escapes this night that keeps repeating. This is the story of my battle—Cattleya Balt’s fight to finally reach a happy wedding night. [Original Web Novel](https://ncode.syosetu.com/n4466fk) [Original Web Serialization](https://www.ganganonline.com/title/2391)