Bloody Chainsaw Girl Returns: Giko Awakens

Original title: 血まみれスケバンチェーンソーRED 後編 ギーコの覚醒

There is a schoolgirl who carries her own personal chainsaw. She was attacked by a dead body who was created by her classmate one day. As such, she does not understand why she was attacked by a classmate. To find the answer she ventures into the enemy's base. There she finds out the reason for the assault.