Mysteries of the Battle Chronicle: - The Requiem of the Sins -

Everyone has a skeleton in the closet. To the person concerned, it is a secret; to others, a mystery.
When Sage City homicide detective Battle-Hawk is called to investigate the gruesome death of a wealthy businessman, he soon realizes that he is up against something much more sinister. When the mysteries behind the murders and conspiracies are unraveled, Battle-Hawk finds the ultimate truth and the identity of his arch-enemy beyond his wildest imaginations.
However, a deadly secret kept by Battle-Hawk will turn out to be a 'bomb' that rocks the enemy into oblivion!