Special Forces: Imprisoned for 500 Years

A mysterious and strange prison, a man who has been secretly imprisoned for five hundred years. The god of death is born in Du, the world is eclipsed, and the special forces - have been imprisoned for five hundred years! What is the secret that keeps him imprisoned to death? What is the reason that makes him willing to be imprisoned? Is he a god or a devil? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.