Iruma Suzuki hasn't had a moment's peace: after being sold by his own parents to the demon Sullivan and proving to everyone that he can handle himself among the ranks of the Abnormal Class, things at Babyls Academy are getting decidedly more serious and dangerous. The level of demons increases, the challenges become more complicated, and the shadow of the mysterious Order of the Six Fingers looms ever larger over the entire underworld. In this fourth season, Iruma and his companions must push their limits and face even more severe tests to rise in rank, proving they're more than just a bunch of troublemakers. But as Iruma's bond with the Demon King's throne grows stronger, his human nature risks becoming a huge target. Between unexpected alliances, magical battles, ruthless training and the inevitable dose of zany comedy, Iruma finds himself having to protect his new "family" before the dark forces of Hell decide to swallow everything he has built.