I know it's because the actors don't really get hit but Kan turned his ring around so it should have left a cut as well as leave a hand imprint on Vegas's face.
You ever think even for a split second that Kim thought Porsche was using was using Chay to keep an eye on him? We know Kim is investigating his family and Porsche after he found out Porsche was hired and put in charge of Kinn without background check or certain level of training. Adding in Big saying stuff keeps happening to Kinn and that there is a mole and right before that Chay showed up at his schedule, knows more about him then anyone else there, and then asks to spend time with him alone by getting tutoring.
Rewatching the fourth episode for the billionth time and just noticed when Porsche is talking with Arm and Pol about using the sauna etc while Khun's asleep Porsche has his hand on arm's back/waist and Arm grabs/touches Porsche's arm several times
News 
We know Kim is investigating his family and Porsche after he found out Porsche was hired and put in charge of Kinn without background check or certain level of training.
Adding in Big saying stuff keeps happening to Kinn and that there is a mole and right before that Chay showed up at his schedule, knows more about him then anyone else there, and then asks to spend time with him alone by getting tutoring.
I love that show