@Med1um I was suggesting a wind spirit for creating modern propellant because the combustion process creates mostly gasses. While I agree black powder would definitely be under Gnome's jurisdiction, I don't think a modern military Otaku would settle for it (especially since magical propellant...
The novel is better at portraying the father. In here, he seems like a jerk, but in the novel he was happy-angry that his son was rebellious and finding his own way.
@Spoonikle They go over it better in the LNs, but everybody else in the party was self-absorbed. The Warrior legit thought he was a hero even though he was a no-name low level hero(who even cried when facing a high ranking demon.) The mage has that haughty noble attitude. The priest was holier...