Handyman Saitou in Another World Ep - 11 English Dubbed

With his magic combined with the demon wolf's essence, Morlock temporarily regains his youth and engages the demon lord when the latter promptly returns for revenge. The demon proves too tough even for the mightiest magic Morlock can summon, but before it can attack the companions, the wolf pup intervenes and slays it. Unwilling to leave the pup fatherless, Morlock returns the wolf's essence to free it from its bondage to the demon lord, giving up his life force to restore him. In gratitude, the demon wolf offers to settle the debt one day, which the grieving Raelza refuses.