Welcome to Demon School! Iruma-kun 4

Welcome to Demon School, Iruma-kun is really fun... It never loses its central heart and manages to blend humor and more serious plotlines smoothly....a nice attention to detail in both art and story, and plenty of laugh-out-loud moments, this is a comedy that's worth your time.
- Anime News Network

Let the Party Begin

The much-awaited Battler Party is finally here, and Iruma and the demons of the Magical Apparatus Research Battler are ready to blast the competition away. But when a surprise shakes Babyls to its core and threatens to upend all the festivities, it's up to Iruma and his friends to find the culprit before time runs out. Unfortunately for them, true evil may be lurking closer than they think...