Shie Hassaikai Arc

A raid to save a girl from a yakuza's Quirk-destroying experiments.

The Shie Hassaikai Arc is a dark turn in My Hero Academia, shifting focus from school heroics to organized crime. It centers on the Shie Hassaikai, a yakuza group experimenting on their boss' granddaughter Eri to produce Quirk-Destroying Drugs. Multiple Hero agencies, led by Sir Nighteye's team, raid the Shie Hassaikai's base to save Eri. The League of Villains also comes into conflict with the group, and the remaining drugs are stolen by the League after the raid.

Quick Facts

Key protagonists

Class 1-A
Eraser Head
Sir Nighteye

Lore & Background

The Shie Hassaikai is a yakuza group experimenting on their boss' granddaughter Eri to produce Quirk-Destroying Drugs. During the raid, Nighteye is killed, Mirio is de-powered, and the remaining drugs are stolen by the League of Villains. Eri is adopted by the U.A. staff, and she trains her 'Rewind' Quirk to eventually restore Mirio's Quirk.

Reader's Guide

The raid on the Shie Hassaikai base results in the rescue of Eri, but at a heavy cost: Sir Nighteye is killed, and Mirio Togata is de-powered. The League of Villains steals the remaining Quirk-Destroying Drugs, leaving a lingering threat. Eri is taken in by U.A. staff and begins training her 'Rewind' Quirk, with the goal of eventually restoring Mirio's Quirk.