B2ST take you behind the scenes of their comeback with '12:30'

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The members were seen getting ready for their comeback stages, and some of the highlights of the clip included their interactions with B2UTY! Dongwoon teased fans by slightly opening his jacket and jokingly said afterwards, "Upon seeing that our fans like this sort of thing, my heart hurts. I thought our fans were very innocent, but they [go wild] if they just see some skin."

When fans told Junhyung that he made a good song, he replied, "I've stayed up how many nights! Of course it's good!" Kikwang also sang a bit of "So Hot", and revealed that Doojoon made up a new genre called cutie hip hop. When fans also complimented Yoseob on his good looks, Yoseob said that he isn't good-looking, but he has a lot of charms.

Spend some time with the boys through the clip above!