phenomen a book

the Main character Dies and is presented the opportunity to become the prince of a European nation in an alternate history the catch unknown to the MC is that other people will be reincarnated in this world as well first book so early chapters are rough but slowly get better over time I would like to say that this is going to be a really weird series from the darkest depth of my imagination and that of some other series I have read or will read. There will be some messed up stuff so be prepared. Slaves, harems, slaves in harems femboys in the harem as slaves and much more incest mothers sisters daughters no one is safe this is hardly serious with the reincarnators getting do whatever the fuck I want magic while the rest of the population has nothing besides the firearms given to them so their lazy rulers can have them kill other people for them.