Jin Chonshu is
the younger twin brother of Chonrei.
When the brothers were 6 years old, they lost their parents to an epidemic. Just
before their father passed away, he spoke of a man named Qin Wang Long, one of
their family's ancient ancestors. Qin Wang Long was a celebrated general of the
great Qin Shi Huang, who single-handedly killed 1,000 men on his own.
Their father convinced the twins that they shared the blood of Qin Wang Long. As
they grew older, they began to detest other people, and soon, two spirits of
their 200 year old ancestors possessed both of their bodies. The spirit that
possessed Chonrei is known as Qin Kong Long, making him into a fearsome monster
in combat. The spirit that possessed Chonshu was Qin Hai Long, who was also
Kong's younger brother.
During the Qin Dynasty, they created the "Qin Book of Secrets" (known
in modern times as the "Jin scrolls"). Within these scrolls lie Wang
Long's soul, who is actually Kong's son. Knowing that they cannot exist in this
realm without these scrolls, the spirits look for them to resurrect Wang Long
and their original bodies into the realm of the living. They then wanted to
continue their conquests in society.
It is said that these scrolls will determine who is strongest fighter in the
world, and the twins know the scrolls are located somewhere in South Town. After
the climax of Fatal Fury 3, Geese
Howard successfully collected all three scrolls. Both brothers continue
their search for them. When they find the scrolls, Chonrei disobeys his
ancestors and tears them up. His ancestors leave their bodies and the twins
continue their lives as normal children under Tung
Fu Rue's wing.