Cosplayder: The Town of Illusions! The Phantom Poison Monster Maxis, Aisaka Sumire SPSE-87

Reina Kamishiro, also known as Cosplayder, is a superheroine protecting the city of Orgas. She possesses the special ability to transform into various cosplay costumes and formidable fighting skills, battling the evil organization Necrophilia. One day, in Orgas City, a surge in violence, seemingly caused by an unknown "new agent," occurs! Cosplayder defeats Ren Takatsuki, a drug dealer for Necrophilia, but is subsequently modified by Necrophilia, becoming the enhanced human Maxis, possessing poisonous mushroom genes. Maxis, who manipulates hallucinogenic poison to induce terrifying illusions in her enemies and drive them mad, displays a horrific hallucination to Cosplayder… [BAD END]