Gantz G.

Gantz: G (stylized as GANTZ:G) is a Japanese manga series written by Hiroya Oku and Tomohito Ohsaki and illustrated by Keita Iizuka. It is a spin-off to Oku's Gantz manga series. Gantz: G was serialized in Shueisha's seinen manga magazine Miracle Jump from November 2015 to February 2017, while its final chapter was published on the Shōnen Jump+ online platform.