It gets ridiculous when they start writing their own spells because he happens to know the exact values of gravity, melting point and atomic weight of any metal, which is vital to write your metal creating spell which he of course found out since it's logical, right?
I was hoping to watch an old assassin in a kids body doing some cool stuff and struggle here and there in the fantasy setting, instead you get an all-knowing demigod kid gathering his harem and doing everything perfectly. Greeeaaat.
