I Picked Up a Wolf in the Apocalypse

Summary

I found a wounded giant wolf.

After the world ended, I treated him as my strongest fighter and a living source of warmth, curling against him to sleep every night.

Later, once he healed, he turned into a man and warned me with a savage look, "I'm the Alpha of a werewolf pack. I have responsibilities to my people. Don't think you can make me stay."

And with that, he left.

I pulled my ragged blanket tighter, confused.

What was he talking about?

I had been keeping him as a dog the whole time. What did his responsibilities have to do with me?