BIG HIT Music recently announced their new boy group, CORTIS, who will debut August 10 at midnight KST. Get to know all 5 members below! | @cortis_bighit/Twitter 1. Martin Martin was born March 20, 2008 and is of Canadian-Korean descent. He is currently speculated to be the leader of the group. | @rebel7744/Twitter 2. James…
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