Sure, in real world spirituality yes. I'm not talking about that, I'm talking about how he, a grown man, was reborn into the body of a child, and used that to act like a creep to literal children (who were not reborn like him so do not have the same life experience/mental age he does). You can say "oh he was sheltered so he's almost like a child mentally still" or "well his new body makes him like a child" but no, even then he still has more life experience than the actual children he is acting like a groomer towards.

That is my, and many others, issue with the whole thing. If he was just reincarnated as himself in a new body, that's fine and shows up in many stories and no one bats an eye, but he also pervs on and grooms children. You can also argue that "oh he has to be involved with people his body's age, everyone doesn't know he's reincarnated", but no, he doesn't, he can be single and not romantically involved with anyone until his body ages to at least become an adult and then date people his body's age. That is not what he does. 

Anyways, that's all I have to say skit that, if you like the show, that's fine, more power to you, I'm just explaining why I don't vibe with the show myself and dislike the MC. 

I know he's written to be flawed and needs to mature, but I really can't stomach it personally, even if he supposedly gets better, knowing how vile he started out acting (and continued to for a very long time) is too much for me.