Glitch Harem System as a Reincarnated Demon Lord

Bonus tags: No NTR, No Yuri, Breeding, Yandere, Progression, Multiple Children, Large Harem, Kingdom Building, Dominant MC, Comedy, Transmigration, Game Elements. James Carter was a complete nobody. No money, no future, and a shit job. And it wasn't until his life came to an end that things finally changed for him. Because instead of finding eternal rest, he woke up seated on a throne, inside the body of the Great Demon Lord, with all his stats maxed out and an entire world at his feet. The problem is his reign lasted less than a day. Because the strongest Hero in the world broke into his castle and killed him again. But when he was supposed to die for the second time, the old, defective system that had brought him to that world did the only thing it still knew how to do well: revive him. Except this time, it brought him back with all his attributes nerfed down to the minimum. Now, to rise again as the Great Demon Lord he's supposed to be and recover the power he lost, James has no choice but to complete the missions his glitched-out system assigns him. — Description from novelcodex.org