Despite longtime late-night host Conan O'Brien closing the curtains on his TBS chapter, he didn't appreciate BTS' J-Hope calling him "Curtain." Now the K-pop superstar is sending his apologies in the cheekiest way possible.

BTS appeared on a South Korean variety show where they identified various celebrities in a game, but J-Hope confidently blurted out "Curtain" when he saw O'Brien's face. The talk-show host deadpanned on his own show Wednesday, yelling after watching the clip, "Curtain. He called me Curtain! ... I'll get you BTS, oh I'll get you good. And by that I mean I'll silently resent you."

But on Friday (May 7), J-Hope tried to kiss and make up by sharing an apology on BTS' official Twitter account, writing, "Sorry,,,,, Curtain @ConanOBrien" and posting a selfie of his best kissy face.

BTS might be able to smooth things over more with "Butter," their second English-language single due May 21 following the success of their Billboard Hot 100 No. 1 English-language hit "Dynamite." The supergroup will unveil the first set of teaser photos on Sunday at 11 a.m. ET.

In the meantime, see how J-Hope teased O'Brien back following their "Curtain" fallout below.