Another TvN "Little Big Hero" visited the TNKR office today.
He has a learning disability (there's a tragic story behind it) but has learned to play the cello. If he likes you, he will give you a heart sign. When he performed at the 2016 TNKR Christmas concert, he did that several times before and after he performed.
Even a grouchy guy like me (who didn't even know how to do it and had to be taught) can't help but join. Every time he sees me, he tells me that he loves me and he wrote me a Christmas card telling me the same thing.
He is not North Korean, but I advertised at that time, and one of our tutors (MinKyung) stepped forward to tutor him for months!