The Assassin Destroys the World

I transmigrated.

I transmigrated into the body of an assassin.

Unfortunately, I had none of my predecessor's memories.

So when I received a mission, I chose to ignore it.

That was until my superior came looking for me in person. "I think there might be a traitor in the gang."

Me: "I'm loyal to the organization and always do my job! How could I be a traitor?"

Superior: "There are only two people in this gang. If you're not the traitor, then am I?"

Me: "Understood, boss."

The next day, I took my dagger and set out to assassinate the target.

Who could have guessed that they would immediately pin me down? "Huh? I'm your boss! Do you want our gang to be left with only you?"

Me: ?

Then who was the person who gave me the mission?