A fan who knows Kang Min-kyung’s brother’s name

(1)Q. I got an autograph from Kangminkyung
(2)Minkyung asked me what my name was, so I told you
(3)true to one’s name
(4)And I said, “Oh my! The name is the same as my brother.”
(5)village-run
(6)So I said, “Oh, oppa’s name is Kang.”
(7) Uh… How did you know