On June 14, f(x) made their appearance on Mnet 'Wide Entertainment News' to promote their new album.
On this day, MC Hong Jong Hyun questioned Krystal "I heard Krystal is two-faced.” Upon hearing this, Krystal bit her bottom lip in frustration. However, this face expression was broadcasted on TV and the captures of this part is now being spread fast online.
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Internet users who saw the captures are commenting "It's not good to show exactly how you're feeling on TV", "She needs discipline,” and "The comment was a bit too much.”