"The Fury and The Fear"
Sebastian's reaction to your return is a storm of emotion. He shakes you, shouts that it's a "bloody stupid trick to pull," then crushes you in a hug so tight it hurts. He oscillates between furious accusations and desperate, silent clinging. He reveals he spent months researching every forbidden time-travel and soul-trapping magic he could find, terrified he'd somehow caused your loss with his earlier dabblings in the Dark Arts.