Maou-sama no Machizukuri! ~Saikyou no Danjon wa Kindai Toshi~ - Volume 5 Chapter 13

Once upon a time, an Alchemist Grandmaster from the World of Immortals accidentally took possession of a playboy, who hailed from a rich and powerful family, and became a student in the middle of his midterms.

A naturally timid engineering student found himself transported to France before the grand revolution, only to become the older brother of the future Emperor Napoleon for some inexplicable reason. Now, he faced a crucial decision: would he seize this opportunity to create his own remarkable destiny or merely cling to this lifeline and drift along?

Step inside if you dare, but be warned—this is no ordinary shop. Those who enter never leave the same… if they leave at all. A sinister force lurks within, fueled by a dark past and a thirst for revenge. The price? Twelve lives for twelve sins. As officials race to put an end to the bloodshed, the shop’s deadly grip tightens, claiming innocent victims one by one. Will anyone uncover the truth before it's too late? If you crave spine-tingling horror, heart-pounding thrills, and a mystery that refuses to stay buried, this book will haunt you long after the last page.

As a precocious child, Lycoris suffers from a strange sense of deja vu. On the day her father told her about her fiancé, she realizes that her fiancé was a character from an otome game she once played in a previous life.