G00

The story is called G00. It’s about a society where “G00 Fighting” is a sport. G00 Fighting is basically where you fight other people in an arena with melee weapons. Whenever you get hit, your blood is replaced with G00, a quote on quote “blood alternative in G00 Fighting”. The story is just a kid named Tone fighting his way to become the best G00 Fighter, but the story takes a dark turn halfway through the series.