This Time I will Definitely live without regrets

lux who fought against millions of monsters is finally about to die. after defeating The Evil gods, lux stabbed himself as he finally achieved his goal. "you may ask why?" because the only person left in the world is himself. the only survivor. "it's finally over. I can finally rest in peace. I wish that I live a normal life if I reincarnated somehow" and that's how his life ended. now that he died, he reincarnated in a world a hundred times bigger than the earth with more than 25 continents. a world full of monsters, a world in a modern era, and at the same time, a world in The Middle Ages with advanced tools. of course, princes, princesses, queens, kings, royals, and nobles exist in this world as stated earlier that this world is a combination of modern and middle ages eras. Now, what do you think the main character does? will he become the strongest person in the world with full of harems and various types of women next to him on the bed when sleeping? or... "What do you mean by harem? ignore those bitches and thots, I will only love those who I truly love and those who love me. people who act like spoiled bitches belong to the street. you may ask why? Obviously, because This Time, I Will Definitely Live Without Regrets." said lux.