[Special Clip] 2NB(투앤비) - Why didn’t I know then?(그땐 왜 몰랐을까) (Studio ver.)

[Special Clip] 2NB(투앤비) - Why didn’t I know then?(그땐 왜 몰랐을까) (Studio ver.) 2NB’s New Single Album [Why didn’t I know then?] Now Available on : ▶Bugs : SUPER SOUND, BUGS!