Monster
"were we reborn?"
"we weren't, were the same"
In the end both Minato and Yori choose to be themselves despite the expectations of the monsters of the outside world. In the end they manage to free themselves of the monsters of society, they didn't need to hide any longer—they we're free. Despite the world telling them they're wrong, bad, and sick. They freed themselves, its just a shame it had to go the way it had for them to be free and express themselves.
None of them is the monster it was the world around them. They're the monster, this society for forcing it's fear of love and beliefs of heteronormality to children with no proper development to think for themselves. To be fed with these beliefs of what is love and who we should love, would bend and break a children's mind.
Those that does not fit the standards set of what love should be are labeled as wrong, sick and sinful. Engraving fear and hatred within the minds of underdeveloped children, they are forced to conform and lie for what they are—all because the world can't accept what's not fit for the standard.
Because out of all the things the world could fear, it choose love