It was Basically it. He only stayed there for 4 days; for the first two days he was provoking Gyuha, and on the night of the second day he came back drunk and threw some insults at Gyuha. Gyuha took the cousin to the room, and when he woke up, the cousin remembered what he had done and spent the last few days apologizing to Gyuha because he realized he was wrong. In the end, it was Gyuha who took the cousin to the airport too.

So like are we just gonna pretend they didn't have that houseguest/cousin who was being a perk? Did he move out? Is he in the basement??? Is he even alive or did I imagine it all.