I get the feeling he'd rather not know.
if it's possible then that's great news and he just speedran the process,
but if it really isn't then he just lost any hope he had
I bet the question slime-kun asked off screen is how to free the fenrir from that curse binding him.
The answer was to smash the "treasure" a.k.a. that stone in front of the fenrir.
With that the fenrir is freed and no longer forced to attack anyone.