fan celebrate the birthday of iKON's Koo Jun zappa 

Happy birthday to iKON\'s Koo Jun Hoe!  Even though he hasn\'t debuted officially yet, he\'s already garnered so many fans through \'Mix & Match\' for his undeniable skills and lovable personality.

Born on March 31, 1997, he has now turned 18 years old (that\'s right, ladies, he\'s legal now) internationally and 19 in Korea.  Fans flooded the Twitter sphere with their sweet messages of happy birthday.

SEE ALSO: iKON become the face of \'Suwon JS Cup\' as honorary ambassadors

Make sure you do the same with hashtag "#SassyJunhoeDay," which is trending worldwide!  Can\'t you just feel the love?  Oh, and also keep in mind interestingly enough that

YG Entertainment released another \'Who\'s Next?\' poster just today... maybe it\'s for iKON\'s debut?

My gift for the one and only Koo Junhoe. Happy birthday! Stay sassy! #SassyJunhoeDay pic.twitter.com/O8VS3W6srE

I loved you even during ur awkward-still growing-chubby phase :c hahahahaga #SassyJunhoeDay pic.twitter.com/9eV8uWW2kj

Rookie rapper IRON makes his debut with \'blu\'

wait wtf so jimin from aoa is dating that guy? isnt she born in 1991 daymm cougar

@Dee0_0 it was just a rumor. Nothing was ever confirmed.

That Sassy Junhoe Happy Birthday iKON fighting!!!

Cough cough it\'s cough cough Kikwang\'s birthday too

sassy ahahahahah i love u guys xD oh baby happy birthday!! hope you have a fantastic day and i wish you the best! #SassyJunHoeDay

Happy birthday to our chrismatic  koo junhoe !! Can\'t wait for ikon debut !!!

Today is Bang Yongguk\'s birthday too, but why didn\'t allkpop wished Yongguk?

Wahhh Two birthdays in the YG house!! Yessss..happy birthday to the best voice of iKON! The charming, the hot and the talented JunHae. Happy birthday! 

Anyway i\'m relieved now, this shouldn\'t be Ikon comeback though, YG will release Ikon comeback after B.I birthday

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