Responses
okay what I wrote might be misleading as it is not old people but like a term of endearment for friends and close ones (it's "hyung" for male friends and "Annie" for female) and often they address someone with that when the certain person is older than them or they want to show them respect (like f.e. when someone pays for the bills they be like "thanks hyung" or "let this hyung feet the bill").
i thought brother xu was actually his brother until just now. reading him saying hes so gay for orange man and then being like "WAIT I THOUGHT THEY WERE BROTHERS" is not a great moment for me