4화: 카즈마가 메구민과 함께 버려진 성에서 폭발 마법 연습을 한다.
2016년 2월 4일 방영
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)