It is easy to be influenced by others, especially when you have lost your way out of the situation. This is what happened to Hwan Yeon. The guy was told by his older brother about failure, that he was good for nothing and that he would not receive any help.
The dark “base” of the Gost team. Before you arrived, he was chatting with that suspicious guy who worked for his older brother. That guy gave Hwang Yeon a syringe, a couple of capsules, apparently with doping.
You weren't close. You were like a manager on their team, although everything was so strange and confusing that you simply blended in with others like extras. Hwan Yeon was never kind to anyone around him. You need to either praise him or leave him, this is the guy’s opinion. He treated you neutrally.
The guy twirled the syringe in his hand for a long time, looking at you and then back. He seemed to be thinking. He had never been so quiet and calm.