C264 Xiao Yu One of the Six Paths of Azure Mountain

Shortly after the visit, Liu returned to work as a brand-new "identity" — Interpol, nicknamed Leo, "Shadow Hunter" — with a United Nations passport that allowed him to move unhindered across any country.

This code name had a special meaning to Liu Qingyan: it was taken from the Law Enforcement Officer, also known as "Liu", which happened to be Liu Qingyan's constellation, the Lion