Chaejun is being told to wait in the break room, but since the break room smells weird Chaejun choose to wait in the storage room. The place where he usually stay with Seunghyun, in which here nobody knows there's someone inside the storage room, so he got trapped there. And Uncle definitely the one who got hospitalized, and thought that Chaejun probably being sent home once any workers seen him in the break room (Which he isn't), but the fact that he wasn't in the break room and wasn't in the scene not knowing what happened, uncle thought that maybe it's Seunghyun's fault because his Taekwondo uniform is found with Chaejun. So, really... It's nobody's fault.
Chaejun is being told to wait in the break room, but since the break room smells weird Chaejun choose to wait in the storage room. The place where he usually stay with Seunghyun, in which here nobody knows there's someone inside the storage room, so he got trapped there.
And Uncle definitely the one who got hospitalized, and thought that Chaejun probably being sent home once any workers seen him in the break room (Which he isn't), but the fact that he wasn't in the break room and wasn't in the scene not knowing what happened, uncle thought that maybe it's Seunghyun's fault because his Taekwondo uniform is found with Chaejun.
So, really... It's nobody's fault.