Boku no Hero Academia 4th Season

After earning his provisional hero license, Deku seeks real field experience and joins the agency of Sir Nighteye, All Might's former sidekick. There he learns that enthusiasm is not enough for professional hero work, especially when an investigation leads to a yakuza organization led by Kai Chisaki, better known as Overhaul.

At the center of the case is a young girl named Eri, whose Quirk makes her essential to a plan capable of changing the balance between heroes and villains. While the rest of Class 1-A trains under different agencies, Deku and Mirio are drawn into a rescue operation that is nothing like school practice. The closer they get to Overhaul, the more every delay or mistake risks costing far more than a failed exam.