When Xeno saw One gradually manifest once more, his irises constricted as he had a flashback.
Back then, he and his sister, Latie, were orphans that nobody wanted. Upon being picked up by the espionage apparatus of Stok, they underwent hellish training sessions. As assassins to be used and disposed of, they didn't need to learn noble etiquette, speaking techniques, basic magic knowledge and survival skills like the normal agents. They didn't even need to know how to read and just had to know some commonly used ones.
They were expendables, after all. Their only purpose was to die and only needed to be able to get around before their deaths. So, most of the things he learned were assassination techniques, everything...