On the August 23rd episode of 'Flower Boy Bromance', the two friends went on a trip to eat at a traditional Korean restaurant, where they attempted to eat hongeo (a fermented fish dish). Afterwards, Jung Joon Young asked his friend point blank, "Introduce me to your older sister."
Roy Kim responded, "Even if I was reincarnated 100 times, the answer will still be no. I don't even want to imagine it," shutting Jung Joon Young down.
It seems Jung Joon Young doesn't have a chance!