Makutsu no Ou is not for the faint of heart. It is a gritty, unapologetic take on the Isekai/Magical Girl genre. successfully transitions the story from a "dying man's wish" into a "tyrant’s rise."
If you find it, read it. Just be prepared for a cliffhanger that will make you desperate for Chapter 6.2. Makutsu no Ou is not for the faint of heart
In the raw release of Chapter 6.1 of Makutsu no Ou: Yomei Ichi Kagetsu no Doutei, Mahou Shoujo Harem wo Kizuite Ou he Kunrinsu Makutsu no Ou is not for the faint of heart