Responses
He was a minor character from the original pearl boy story (that guy who briefly took care of Jooha when he was in dooshik's seoul apartment). The whole syringe thing is I'm not entirely sure about though, taking their line of work into account it's possible that he keeps those things close by and accessible for emergencies?

Who is Zen? And why was he in the car with them.
Seunghyun said that taking Yuta with him was completely unplanned, but why did it look like the whole thing was planned. For example, he was asking if Zen was here and then the whole thing with the syringe. (Looks very calculated to me haha)I hope someone can answer my questions, thank you!