KonoSuba – God’s blessing on this wonderful world!! Season 1 Episode 4
All of the weak monsters have gone into hiding since a leader of the devil king’s army has settled in near town. Kazuma, who had been focusing on improving his skills, is stuck at a standstill. With nothing else to do, Kazuma tags along with Megumin’s training, which consists of unleashing explosion magic into an abandoned castle.
Episode Name: Explosion Magic for This Formidable Enemy!
Air Date: 2016-02-04