"He was," Kasuyi sighed. "But in order to avoid bringing him harm, we had to withdraw him from the Army. You see, your son is a much more talented person than we initially thought. His potential is enough to carry him far! Because of that, the Army saw it best if they put him under my care. I have a King Class expert teaching him right now. With such a powerful figure to guide him, Reinhard will become exceptionally powerful in the times to come." Kasuyi easily lied through his teeth.
Telling the Armstrongs that he stood against the Imperial Army would be a bad move at this point in time, and if Kasuyi could help it, he would prefer to take them in without a fuss.