S4·E64 – An Unexpected Song! SJ's Sloppy Underwater Karaoke

Leeteuk

Himself

Kim Hee-chul

Himself

Yesung

Himself

Shindong

Himself

Eunhyuk

Himself

Donghae

Himself

Choi Si-won

Himself

Ryeowook

Himself

Cho Kyu-hyun

Himself