Just another trash isekai. It has nothing special about it. Guys gets looked down on because of some status check? Check. Guy becomes overpowered for no reason? Check. People find him strange after he shows power, but do not really question that? Check. Slavery and strong aversion to it? Check. Girls who is literally exhibiting signs of puppy love? Check. Total stupidity of a "villain"? Check. Total stupidity of a protagonist, who slightly adjusts his face for the sake of not being recognized by like dozen people whom he will never realistically meet? Check. Fan service on the girl in puppy-love mode? Check. Boring. We have Slime for all this, and Rimuru is smarter, at least.
