On the most recent episode of Infinity Challenge, guest artists were invited to perform at a boxing event. Some of the artists who performed for the event were OneTwo, Bada, Brown Eyed Girls, and K.Will. While OneTwo heated up the stage with a bright and fun song, K.Will slowed things down with his ballad, "Miss, Miss and Miss." Bada then sang "Mad", while Brown Eyed Girls sang "Sign." All the artists made the entire stadium excited for the upcoming boxing event. Everything seemed cool on stage but what went on backstage was a different story. Backstage, K.Will dropped to his knees instantly when he began serenading to Ga-in. While the two artists had their own little date, K.Will said, "Jo Kwon, I'm sorry." Tsk tsk. Serenading a "married" woman? K.Will, you should know better! After the serenade, Ga-in burst out in a smile and said, "I like it," and Yoo Jae Suk interjected and jokingly said, "This is all we can air." From 1:17 http://www.youtube.com/watch?v=pOqVtx18XaM video: begislove3 Jo Kwon, jealous yet? Watch out for your woman, you've got some competition! [gallery columns="4"]