And when I touched her skin, my fingers ran with blood

I think brother will be rejoining! I spoke with Chan and she can't rejoin this immediate second though, so just tagging an alt ending for him in the meantime!

Iluq listened with ample excitement to the pale bears words, though her face remained straight throughout. The yearling knew the trouble with emotions, and shunted them aside. She nodded, knowing those stipulations well... and agreeing with them. Her brother introduced himself next. Still, there was one thing that must be done. Something her brother and herself had discussed. "You have our allegiance. But my brother was given an additional task from Siku," she spoke. "We had heard of the storm. They wished to know if any survived it. If the branch here still existed." All of the branches knew of the others... for wolves like them, who relocated, and for when their was war, and a message needed to be sent in case assistance was ever needed. Their mother would be glad to know this branch still existed...

Before they were chased off, Siku had spoken of this days prior. While her brother would not be allowed back into the branch he had left due to the incoming future cubs, he would be received for this knowledge.