第4話: カズマはメグミンと共に廃城で爆発魔法の練習に付き合う。
2016年2月4日 放送
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. (Source: Crunchyroll)