@shubham Rajput First, he is more than 6. Second, at chapter 1, he was a new born, so technically, for 34 chapters, mc aged 6 years. And last, mc is recincarnated and is not acting as a children at all so I have no idea what you are expecting ... unless I'm the one having weird knowledge and all children should be a mayor or something at 6 years old 
Feel free to dislike my comment or review – that’s your right! But at least I'm making an effort. If you can't handle different opinions, you might want to rethink being on the internet. Stay safe!