[Dual personality + monster invasion + cool fighting + urban martial arts + male protagonist's defection]
My name is Qiao Sibai, and I have a playmate who grew up with me.
His name is Su Nian. Except for Su Nian and his parents, everyone else doesn't seem to like me very much. They all call me crazy.
I thought Su Nian was the person who cared about me the most in the world.
Until I discovered that he was the second personality I imagined when I was eight years old.
There are many monsters in this world, which people call dark species.
The mother died during a high-risk mission arranged by the Administration.
It made me completely black.
