Quirk-Erasing Bullets

Item from My Hero Academia by Kohei Horikoshi

Tiny syringe-like projectiles created by Overhaul using Eri's blood and cells. On impact, they permanently destroy a person's quirk factor — the biological basis of their power. The central threat of the Shie Hassaikai arc and a weapon that terrified hero society.

The quirk-erasing bullets represent the ultimate threat in a society built on quirks — the ability to make someone powerless permanently. Overhaul manufactured them by repeatedly disassembling and reassembling Eri's body to harvest her Rewind-based biological material. A prototype hit Mirio Togata during the raid, destroying his Permeation quirk. The completed bullets were mostly destroyed or seized, but their existence proved the concept — and the terror — of quirk erasure as a weapon.

Appearance

Small dart-like syringes barely larger than a bullet, with a glass capsule containing a red serum and a needle tip designed to penetrate on impact. They can be loaded into conventional firearms or specialized launchers. The serum inside glows faintly.

Also known as: Quirk-Erasing Bullets, Quirk Bullets, Anti-Quirk Bullets, Eri Bullets

What They Know

• Created from Eri's blood and cellular material — her Rewind quirk is the active ingredient that reverses quirk evolution
• A prototype bullet permanently destroyed Mirio Togata's Permeation quirk during the Hassaikai raid
• Most completed bullets were seized by heroes or destroyed — but the League of Villains obtained some
• Shigaraki later had the bullets reverse-engineered to serve as leverage against hero society

Connections

• created_by — overhaul
• made_from — eri
• used_against — mirio

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