How Not to Summon a Demon Lord (2018)
S1E7 Change of Heart
Episode Overview
The morning after Prince Keera's visit, Shera abruptly announces she's leaving while she and Diablo are in the middle of brewing potions. He can't bring himself to stop her, and once she's gone, he shuts himself away in the inn, drowning in regret. Seeing him this defeated unsettles Rem as well.