Rebirth as a troll: beautiful elves all become my slaves

Nick comes back to life in a world full of magic and violence, and the system gives him the identity of a troll. In order to continue to live, he must complete the ultimate task set by the system, which is to become the lord of the continent. In the process of MC becoming a lord, he keeps challenging strong rivals while not forgetting to take beautiful and sexy elves into his harem. SYSTEM: Congratulations to the host for turning on the function of having many children! Troll: I need more territory and women.