A revenge story of an Assassin who died because of betrayal.(Not Horror) its regression
Eren, A Mastermind in planning the Death of the World's most wanted criminals as well as the most dangerous man alive on the planet. People say A single threat from him can change the look of war. That person is on his deathbed, breathing for the last time. All the countries' leaders are smirking at him. "agh... who..o are all of you...?
He asks the question to the people who killed him." THE VVV association ".
He died the next second. what happen's next, follow the chapters to find out.