Starting From Today I'll Work As A City Lord

When a gaming otaku gains the power to cross over to other worlds, he will obviously have to figure out what to do with it! But what is this?! A powerful cat-woman elder sister, a loli fox-woman, a cuddly rabbit-woman younger sister... This isn't a zoo! Welcome to a world where the strong prey on the weak. Then again, it's all so wonderful! An authentic strategy game, a huge conspiracy crisis, this other world's hegemony is now loading, all waiting for thou scum... (Source: MangaDex)