 It is revealed during this fight that Kiryuu is the biological father of Jet, and after the battle, while Kiryuu fights the mob enforces of Gambino and Black heart one of the henchmen gets a clear shot at Kiryuu.The bullet seems to be headed straight for an unaware Kiryuu but Jet jumps in front of the bullet at the last second which pierces him in the throat, it is confirmed in the next chapter that Jet has died from blood loss.