Jung Eun Ji Wishes Key Good Luck on His “Marriage” with Yagi Arisa * Episode 7. The preview tricked me. I thought Eun Ji was going be a trouble maker at Key's wedding. Jong and Tae including Key made such big deal about it! I was sitting on the edge of my seat going OH MY GOSH! the other woman! that I didn't know existed! I watched helpless as Jonghyun and Taemin stoked the invisible fire. Haha Key's friends are like the subtitle in the show stated, mischievous.