Interdimensional Isekai Workers can use realistic mask and act to mimic a person in distress.

Alex is given a task to DELIVER via stab.

Timing and execution is key. For employees safety, he is given a mask to hid his identity.

A usual knife, jacket, and the acting skills are mandatory for this assignment.

Alex entered portal TRAAS1. The setting was crowded. It was office hours. The client is with his juniors at work. Alex distressed and run towards the crowd. 

Usually people will move away, Alex attempted to aim for his juniors as the client will take the hit.

The client took the hit and the knife pierced his heart. 

Alex ran away from the crowd, passing the authorities and pursuers.

As for the client, he became a creature at his fantasy world. Some say, he worked his way up to be overpowered. Met a dragon. And built a nation.