I think it's more about to "untame" them. Like bringing Sera away from her forced perfectionism and getting her to live more for herself. Just like the 3 shopping mall kids (forgot their names lol xD) slowly realising for themselves that there's something wrong in their world.
How can you forget Remi???? She's the nicest person with powers in this story! Lol.
I'm not good with names lol xD I only know John and Sera because they're mentioned every chapter.
SURELY you remember Arlo then???? Lol. No, no. Again I'm kidding, I'm kidding. Really!
This is /really/ about John and his journey to tame all God-Tiers.