Knight of Doomsday City

Darkness, inescapable darkness, Zhuang Yunfan, eroded by the abyss, is full of endless desire for killing. He will not return to peace and temporarily escape the darkness until his desire is satisfied or his strength is exhausted. An explosion in a rain of blood broke the balance of space, and a passage appeared, and Zhuang Yunfan, who was eager to kill, broke in. What kind of world is on the other side of the passage, and what will happen to Zhuang Yunfan?