The magic street lights, spreading in the capital and major cities, have the necessity of a magician periodically recharging the magic gem with mana.
If that effort can be saved, then it should become a considerable cost reduction.
Besides, the work of the magicians, who are currently recharging the mana of the street lights, won’t decrease anyway.
There is a large amount of other magic tools in the infrastructure systems the magicians have to recharge with mana. Due to the lack of magicians, the recharge interval is long causing periods where the tools aren’t operating. There was a large amount of things that haven’t been installed although they are necessary as well.
Also there is another thing they want to purchase.
It is that enforced transfer magic square of the mana absorption type that lured us into the 『Deadly Inversion Regulation』.