that may be true but I don't think anyone would suspect him if a great mage monster-rank ranger knows something more

Well apparently, it is not very clear because I don't think Lith can manipulate matter

Why does it seem to me that if some other Nobles like Phloria picked up solus, they would be much stronger than Lith, I think Lith is just an untalented individual who just so happens to have the luck of picking up an artifact as a child and discover a breathing technique without effort, this story would be much more interesting if Lith uses some of his knowledge from his job on earth to prevail instead of using book/ movie names to describe something.

Because for me the story is getting boring, Lith seems average compared to all the beasts and novels and it seems he can't even remember stuff without solus, with his infinite memory space, he doesn't seem to have that much of an edge over others, and the plot is just Lith going against a strong enemy/ disease and after 20 episodes he solves it, or lith dating people