Bloody Chainsaw Girl Returns: Revenge of Nero

Uguisu School student Giko Nokomura totes around her very own chainsaw. One day, she suddenly finds herself attacked by cyborg zombies. The mastermind who created the cyborg zombies and attacked Giko is none other than her classmate Aoi Nero. What could she possibly be plotting?
(Source: JFDB)
~~ Adapted from the manga "Chimamire Sukeban Chainsaw” (血まみれスケバン・チェーンソー) by Makamoto Rei (三家本礼).