I've been wondering about this story. In his world, this guy became so powerful that he literally transcended to another realm of existence, where he spent 300 years getting even stronger. Then he was going to go to an even higher realm, and accidentally went to an alternate version of his original world instead. Ok, that's all fine, but where did all that power of his go? There would be plenty of ways to keep that story point and still make an interesting story around it, but the author is definitely trying to make him a pathetic hero, while still clinging to the sexy harem full of girls route. Not to mention the ridiculous over-exaggeration of the male/female relations. I often wonder if the author of this isn't anti-male, because in this story, every single female in the world is a horny, predatory, power hungry animal; and let's not forget that this world is the reverse of the "real world", meaning every MAN in the world must be a horny, predatory, power hungry animal. I'm not going to get into a political argument, but I don't know how much more of this I'll be going to read.