"You're a monster!" Kiori was visibly hurt by those words. He had been called that many times before by nameless, faceless individuals, but the word seemed to hold a far more potent connotation coming from Rylee. At first he thought it was just a result of his magic and that soon she would come around, but as she went on he found out that there was something more fundamentally repulsive about him. He had lost himself. Despite all his efforts to at the very least remain human, he had become warped into something else. "Rye, I--" but she would not wait to hear an explanation. She began walking off into the woods, not seeming to care in the slightest if there was an assassin waiting for just such a moment to slaughter his prey.
Then, he felt something strange bubbling up within him: anger. Honest to God, human anger. He got up off the ground and began to walk after her. "Wait!" he said, his voice stern and strong, no longer the cold the cold and stoic voice of an assassin. "You don't get to just spit on me like that and walk away!" Indeed, it was clear that he was angry as he followed after Rylee, but it was also clear that there was none of the killing intent that coated every word the assassins spoke. "You want to talk about your Kio? Fine, let me tell you exactly what happened to that twelve-year-old boy after the Assassins Guild showed up out of nowhere and tore him away from his family and his best friend without giving him so much as a chance to say goodbye. It starts off innocent enough: they teach you how to hunt animals. Their fledgling assassins become expert trackers, learn how to handle knives and weapons, learn to kill another living thing, all while thinking 'hey, this isn't so bad.' Then, they don't tell you, but one hunt is for a human. You slowly realize that the tracks are human footprints, but all you can do is watch as they tie him -- or her -- up, leave them helpless, and then they hand you the knife.
"It is this moment that determines whether you get to be a human or not. Most kids cannot kill a human so easily. They hesitate, try to run away, or break down crying afterwards. However, the guild makes sure that the knife is in the child's hand when it cuts the target's throat, by force if necessary. Then, that child's conditioning begins. It is every form of cruelty you can imagine. Torture, blackmail, death matches, anything the guild needs to do to get you to stop feeling. However, your Kio was a special one. He knew what the Assassins Guild was about. He thought, 'I just want to get through this so I can see Rye again someday.' His greatest fear, above all else, was being made into one of those monsters he'd heard so much about. And your Kio was able to put two-and-two together. When they handed him the knife, there was no hesitation."
Kiori had never thought back to his first kill before; he had spent all these years trying not to think of it, trying not to show any of his feelings to the guild. But now, free from those shackles, his voice shuttered as he recounted that day. "I kept my hand steady, I held my tears in, and I didn't so much as allow myself to gasp. They said I was a natural, and they had no reason to break me. It was like that for every single kill, and eventually I got used to it. If I am a monster now, Rye, it could have been 100 times worse. Your Kio is still here. He's just a bit tired from a decade of not feeling anything. And I'm damn sure that as stubborn as you are, you would've become one of the broken ones." His voice tapered off at the end of the story, his anger subsiding after the release that he had been waiting for so long. "I'm sorry that I suggested something so disgusting, but I'm just trying to keep us alive. If you die, then I feel like it will all have been for nothing."