Yu Chen
Few months after Hinari and Zaki's wedding…
Three men were sitting at the round table in Sei's study. The CEO of Red empire, Sei, President Zaki and the CEO of an empire that was currently rising, the Yu Empire headed by the young man dubbed as the devil, Yu Chen.
Sei and Zaki considered him as their younger brother since they encountered him during the civil war in Country H. He was the young boy who continuously chased after them, purely for his obsession on the hacker Monster, which is Sei.
At first, Sei and Zaki agreed to the boy's request in joining them because of the presence of Nine and Ten. Back then, while Yu Chen was chasing them, Zaki immediately recognized two of Yu Chen's bodyguards.