Duel your enemy and kill him. Take his assets, including his wives, as your own. Grow your estate and become the most powerful warrior mage this world has ever seen.

When Jerry follows the trail of his missing uncle, he discovers a mysterious monster-girl and an equally mysterious region called Delom where everything works like a video game. But there isn't time to gawk, because Jerry's inherited his uncle's farm, once the most famous animal breeder in Delom, and everything is falling apart. The animals are low level, there's not enough food to keep their health up, and a greedy developer wants to put Jerry and the farm out of business. 

I was a nobody gamer working a dead-end tech support job. But then, I was pulled into this strange fantasy world, and I’ve learned that I possess a power that makes me, quite literally, a god walking among mere mortals. Now, I always win every fight. Now, I always get the best girls in my harem.

The last thing I expected was to gain the spells of the woman in my bed. Hell, I didn't even know magic existed until I'd cast a spell that morning. Then a beautiful teacher from a magical academy told me I could become the universe's most powerful mage. To get there, I need to become stronger. I need to ace all my examinations. And, most of all, I need to master the most potent spells. But I have to start somewhere.

At the end of his life, Eryk Veiger challenged his greatest enemy...and lost. Just when he thought death was going to claim him, he woke up in his old bedroom, in a city that had been destroyed decades ago, and found himself back in his 17 year-old body. Now he’s being given a chance to do things over again, to prevent the destruction of his home. But to change the past, Eryk has several daunting tasks ahead of him. Failure to accomplish his goals will mean more than just death. It will mean having to once more watch as everything he has ever loved is destroyed.