The Strongest Sage with the Weakest Crest - Vol. 15 Ch. 47 - The Strongest Sage, Guesses Correctly

[MangaDex]

 

[lordb1]

This was the perfect time for his real identity to be revealed to his party but whatever.

 

[Tired_Man]

This was the perfect time for his real identity to be revealed to his party but whatever.

I agree, the fact that his party doesn't even question or doubt Mathias' origin in the slightest bit about him being knowledgeable on forgotten magic and technology is astoundingly weird on the author's writing. Like dude is a teenager like them LOL