Airburst artillery and daisy cutters are good counters to massed infantry.maybe these days in the case of the belmont lewd cult.
Back in the day you crest a hill and there are more neko swarming you in the legions than there are blades of grass underfoot.
No matter how much you shoot... And each neko, Despite looking like a 14 year old girl has the strength to tear your arm off with her bare hands... And even if the fields runs red with neko blood and you forced a rout the survivors are revived through ST and then their numbers swell with freshly grown nekos in a matter of weeks.
They're like pests. Leave even two alive and they can breed an army in a year fit to take a city...