How many people know that IU is Lee Jieun?

(1)It reminds me of Samsung, but I changed my name to Sunyang.
(2)I had to, but if I use Lee Jieun’s real name, it’s a problem.
(3)54 minutes. Good. Reply.
(4)Who knows that Kim Jae-pil and IU are Lee Jieun?
(5)Will it be okay?
(6)35 minutes. Good. Reply.
(7)There are a lot of people who know about ordinary people.
(8)29 minutes. Good. Reply 10.
(9)Professor Seo Min, is this a joke? You revealed your real name.
(10)Alpes, you’re all right?
(11)28 minutes. Good. Reply.
(12)My mom and dad know about Lee Jieun.
(13)4 minutes. Good. Reply.
(14)Ordinary people. Yes.
(15)30 minutes