The Killer in Chinatown Isn't So Calm

Plot Synopsis

The protagonist has the superpower to make three attempts of trial and error every day. This ability is used by the protagonist to uphold the justice in his heart and look for his childhood sweetheart. He is codenamed V in a killer organization and only takes on tasks of eliminating despicable people. He discovers that both his own past and the clues related to his childhood sweetheart are associated with a mysterious organization.