Killer Destroys the World

I have traveled through time Traveled through time and became a killer But unfortunately, I have no memory of my predecessor So after receiving the mission, I chose to turn a blind eye. Until the superior came to find him personally, "I think there may be a traitor in the gang." Me: "This little guy is loyal to the organization! How can he be a traitor?" Superior: "There are only two people in the gang. You are not a traitor, am I?" Me: "I understand, boss" The next day I brought a dagger and prepared to assassinate the mission target. Who knew that the other party grabbed me and said, "Huh? I'm your boss! Do you think you're the only one left in our gang?" Me:? Who is the person who gave me the task?