Vs. Son Hee and Bacho

We know that in his early days, Sakamoto was a hit man. He only went after bad guys, but when he saves his wife to be, she makes him promise never to kill again.

Now a young woman named Lu is confronted by assassins. They are after a key she possesses which gets one into a room of treasures handed down by her parents who were murdered by these guys.

The key to this show is dealing with the baddies without killing them. The problem is that these guys are still around after their confrontations. This may make this a limited series for me. Is it going to be one encounter after another with the same people?