Redsand Canyon paulatim

Arsenio had said the same of Germanicus. They trusted each other in a way he wished to one day trust the rest of the auxillia. So far, only the imperator had that level of trust from Kallik. He knew he could trust his commander with his life, just as he would give his own to protect Germanicus. 

I think I could trust Arsenio eventually, the auxillary answered. The other soldier had given him space, let Kallik come to him when he was ready to know him. But to someone who spent his childhood learning what it was to lose those who meant most to him, he needed time to develop deep bonds with others. He needed to be allowed to come to things in his own time.