My friend who told me to grill meat

(1)I met a junior at school and he said he was hungry
(2)He introduced me to some meat he knew
(3)We went together and it was a traditional Korean beef restaurant
(4)It’s an expensive place that costs tens of thousands won per person
(5)But since he’s a senior, I ordered it so that he doesn’t pretend to be there
(6)The junior suddenly apologized for not being good at grilling meat
(7)They told me to grill it. I was dumbfounded
(8)I just grilled it, but when I finished eating it, I asked how much it was, and he said he paid in advance payment was made in advance
(9)I should have cooked it more deliciously