Preparing for war... not against humans or ants. Earth I believe, was to become a battleground (based on the light novel), humans would just be collateral damaged and the ones who had awakened to be strong enough were tools. Damn, got to go back and read again (forgot some stuff in the story)...
There was a time when the Ants came out - reminded me of Hunter x Hunter... but it was only up to a point.
The summons - are sooo (lol)
Actually against...
Spoiler
Other sovereigns...
I think that's what they are called..I forgot jinwoo is called the shadow sovereign right? So he's battle is with the other sovereigns......I'll stop the spoilers there for now...
Against the ants?.....
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Or the humans?
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That would be too cliche.
Meh...