On the July 8 episode of 'Come On Show (also known as 'Talents for Sale')' Kim Jong Min and Solji opened up a dance class, teaching the "Troublemaker" choreography to the other guests. 

Kim Jong Kook and IOI's Kim Se Jung were the first to perform the couple dance in front of everyone. 

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While Kim Se Jung was more forward and aggressive, Kim Jong Kook was more timid and his evident restraint and awkwardness was duly noted by the other members on the show. 

Kim Jong Kook answered bashfully, "Because I feel uncomfortable," bringing laughter with his shyness around girls.