TVXQ! at 00:12~00:39. You can also spot them among the crowd in the rest of the video~

DVD & Blu-ray Release on 2016.1.20 (Wed)!

Partial Translation:

• Heechul and Yunho’s interaction:

Heechul’s saying that on matters of etiquette, Yunho and him are the opposite of each other. Yunho would say “yes, hello (w a bow)”; Heechul would just say hello // they laugh and hug; Yunho: it’s good~

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Credits:

avex pictures,
Partial Translation by @snxy: 1 and 2,
Shared by TVXQ! Express