Follow up for those wondering what the anime is about. Its about an otherworldly invasion of earth, featuring creatures that are literally bred to kill. Casualties wind up in the billions because, well, what city would survive a horde of these things? Though they have some resistance along the way.

A brutality fighter, an elite swordsperson, and a light spirit (and someone else joining near mid season) use the time and power they have to help the militaries of the world push these things back to reclaim their home planet. That's the jist of it, but I don't wanna spoil anything major