Deomon trigger

The term fight fire with fire denotes many things and the Tigger association built on killing and hunting devils to protect the earth stick thoroughly to that rules by enlisting the aid of devils to fight for their course.
A/N: Whiles this isn't my first novel I'm still finding it hard to write longer fight scene so the early fights will be relatively short with either the enemies being too weak or op for the mc.
Yes it is harem but I will try my best to not include it in the book to much. I do enjoy romance but I also know including it too much can be pretty damaging to the plot.
Also the MC is an Anti hero but not the edgy kind that can't draw a like between villain and Anti hero.
he is a good person but isn't afraid to do bad things to save or protect.
As for the power system it will be explain thoughout the story to not overload or bore the readers.