**Shin Nemoto**, a disillusioned con artist embittered by human deceit, possessed the Quirk **Confession**, compelling truthful revelations of intentions. This power fostered alienation and deepened his cynicism until **Kai Chisaki (Overhaul)** recruited him. Recognizing Overhaul's genuine resolve, Shin pledged unwavering loyalty and joined the **Shie Hassaikai** as one of the **Eight Bullets**, considering himself Overhaul’s most trusted confidant with exclusive insight into his plans.
Slim and light-haired, Shin wears glasses and adopts the gang’s uniform: a black plague mask, cape, bowler hat, baggy pants, and pale sneakers. Unmasked, he projects a sharp, analytical demeanor.
His Quirk, **Confession**, forces targets to answer questions truthfully, exposing psychological vulnerabilities or hidden motives. However, it fails against intensely determined or mentally unstable individuals (e.g., **Himiko Toga**). Lacking combat strength (Power: 1/6), he compensates with high technique (5/6), analytical skill (4/6), a handgun, and guerrilla tactics. He frequently partnered with **Deidoro Sakaki**, exploiting his balance-disrupting Quirk to target unsteady foes.
During the Shie Hassaikai’s alliance with the **League of Villains**, Shin used Confession to extract ability details from **Toga** and **Twice** and confirm their lack of betrayal plans. In the compound raid, Shin and Deidoro confronted **Mirio Togata**. Shin weaponized Mirio’s guilt over failing to save **Eri**, attempting to shatter his will. Mirio overcame this, defeating them both using his **"Phantom Menace"** technique.
Critically injured, Shin crawled to Overhaul, who provided a **Quirk-destroying bullet**. Shin fired it at Eri, anticipating Mirio would intercept—which he did, sacrificing his Quirk. Overhaul later fused with Shin using his Quirk, merging them into a four-armed hybrid retaining Shin’s Confession ability via a mouth on one hand. **Eri’s Rewind Quirk** separated them, leaving Shin unconscious. He was arrested after the Shie Hassaikai’s defeat.