Isnt it obvious? Use light.duh. its a demon!

Extinguish is water magic
(づ￣ ³￣)づ

that was earth magic lol I think not light he got the stone of light from other rocks
╮(￣▽￣)╭

I don't know if this is correct but I don't think they can use magic without the ores or the familiars/pet things.#－.－)

sorry CANT use magic without the ores or familiars (￣∇￣")

okay stop there it can get annoying when someone makes the characters op so i'm going to guess that the person who's writing this manga had an idea to make it to where the humans had to rely on there own power at first because it seems like only nobles know how to get the familiars and then the towns folk know how to get some ores probably by accident. so when you have a human they cant use to much power but with the familiars as you can see then they get powerful as well with the ores but by themselves there not actually weak my guess again in that they all learned swordplay/swordsmen ship from some on who knows it thus making them stronger not powerful just stronger and I like it like that but then theirs also the MC who can use self defense that's OP in some eyes
（￣へ￣）





so stop talking shit k (▰˘◡˘▰)ヾ(❀╹◡╹)ﾉ~