My blue angel (Loki fanfiction)

When odin brought the child, at first there was no intension of raising him as his own child. Frigga was also afraid that the juton may hurt her son.
So, he was given to tyr and his wife zisa, a childless couple.
Tyr being the loyal general didn't protest and zisa was happy to have a child of her own.
But what happens when oneday odin tells them to return loki?