Japan disappoints me again...
Anyway, I can't say I'm super motivated to read the LN. Over-powered and competent protagonists aren't that unusual in contemporary fantasy literature. There was a slight novelty to it as a manga, due to the emphasis on world-building, Lecan's age and just how much shitty isekai exists, but frankly I've never read any LN that's written on a level beyond young adult, so I don't think the prose and Lecan alone could carry the plot for me.