The young rapper had been praised for his rapping on the show. However, past messages have surfaced and alarmed viewers. Fellow students from school are claiming he's a thug and a bully, and alleged messages seem to confirm.

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An alleged Facebook chat reads:

Jang Yong Joon: I threw away the progress report *curse*
Friend: Report cards are coming soon anyway...
J: F*ck, seriously
J: My mom b*tched loudly on purpose so my dad would hear.
F: Is she yelling at you for your grades?
J: She's b*tching like crazy.
J: F*ck, she doesn't say anything about me smoking, f*cl
F: Kekekekeke have strength.
J: *Friend name*
J: Can't you just come beat her up?
F: What?
J: My mom.
J: Come beat her up.
F: Get lost kekekeke.

More problems have been found on his twitter @yjyjyj0530 (now deleted). Viewers found a reply of him responding to a 16 year old�who was prostituting herself on Twitter for 50,000 KRW (approximately 44 USD), responding that he would take her.

However, someone claiming to be Jang Yong Joon's friend from the same crew claimed that the exchange happened only because Jang Yong Joon was going with the flow of his friends. His friends had responded to the tweets in similar ways while, and Jang Yong Joon had done the same while joking with his friends. His friend claimed he was going through hard times, and this was making it worse, and asked the original poster to take the post down.

What do you think about the situation?