Ooh, so there are other people who are exceedingly powerful. Though I would expect Reisu to still be far more powerful since she stood up to a Bikubiku, but then again I also expect fights that are actually tough for them. Mercenary path unlocked, I guess. That will certainly secure their position in that country.
With that said, sicking murderbirds at their opponents that also eat them and have no concept of taking prisoners may give this nation a poor reputation. Let's hope they quickly see that there is an abundance of food that is tastier than raw food that they can eat rather than other people.