Can't think of a more mediocre anime. Nothing is absolutely bad, it's just another isekai.
The main character is OP (because he has to be), saves slave girls (because he has to) and creates a harem around himself with all kinds of demi people.
I can't recall the plot, if there was any. It is ok for a filler, like if you have nothing to watch that day, it's ok.
*submits review*
myanimelist: "Please enter a longer review"
How long this review has to be? Seriously...
Ok let's talk about the girls, you have loli action but don't expect any development in their relationship. It's the same stuff with Overlord, they tease the main character but never actually do anything.