it's probably just bc it's his second? life, he probably has more of an adult mindset, like esther.
The ML in the novel made Esther confused and uncomfortable multiple times. It was bad, but it was unsettling because as the reader, it seemed he was playing little games to make her think about him even when we know she was uncomfortable with it.
I think that it cause he mostly using her for her powers from what we see this early and that he has had probably lived multiple lives like Esther either way I don't really like him.
I find the ML so obnoxious, something about him just doesn't sit right with me. I have dropped quite a few webtoons solely because of the mls, I hope I don't have to drop this one. I really adore Esther, her family and her growth till now