A Little Different

Book one.

"This is different from what I first thought."
...
"A person's heart does not make its decisions. The brain does. But, in my opinion, the brain is in love with the heart, so it dedicates its desires to the heart... I know I sound like a mental person, but- do you get what I mean?"
...
"If you're not hurt, then I'm John Cena."
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"I will rip your head off, you sick bastard!"
...
"You're my love and my best friend. I hope we stay together forever like this. This pain is temporary."
...
"I may not understand you both and your cheerfulness," he said quietly, "But I want to."
...
"I too, lost my way." he grinned broadly, offering his hand to the latter.
...
"You're funny, and I like that! C'mere! Let's be the best-est of friends friends! And let's make it... BEST FRIENDS FOREVER!" he giggled, clapping.

ARMY is a non-human and gender-less being. It is just like humans, but different. ARMY's sad after living for 170 years with no purpose to serve. ARMY didn't like its name being used in wars. ARMY wants a new meaning, a more wonderous meaning. A less malicious meaning. But will that ever happen?
Will ARMY ever find its meaning?
Meanwhile, there are seven lost souls, seven wandering boys, waiting for their destiny.
Who are they? What will happen? What was this world, anyways?