It is an epic battle of revelations stemming from Super Junior's 20 years of experience.

Super Junior's Heechul and Shindong appeared on Hong Jin-kyung's channel, and true to their 20-year friendship, their banter was incredible.

From the very beginning, Heechul knew how ill-mannered he was during his trainee days.

I really couldn't stop laughing when they started the self-disclosure.

I didn't do anything wrong, but they told me to write a letter of apology

When I heard that he wrote, "I don't know what I did wrong, but I'm writing this because I was told to," I thought, "That's typical Kim Hee-chul."