A Slave
Another Kim Hajun used his dragon fang slash horizontally and vertically continuously to slash those horse-drawn carriages and wagons along with the slave trades and slaves within them.
Another Kim Hajun checked whether all the slave traders and slaves in the horse-drawn carriages and wagons were dead.
However, it looks like he left one slave whose whole body was covered by a shabby sack to be alive.
Another Kim Hajun approached the slave and then he grabbed the slave's hand and then dragged it back to the point where he and the real Kim Hajun separated.
Meanwhile, the real Kim Hajun couldn't spare a single slave trader or slave as he had previously planned.
He killed all of them without leaving a single one alive and after he checked that they were all dead, he went straight back to the point where he and another Kim Hajun separated.
The two Kim Hajun met and the real Kim Hajun was relieved when he saw another Kim Hajun carrying one person who was still alive with him.