HISTORY�teased their transformation into bad boys for their upcoming title track, "What Am I To You", and more for LOEN's 'CSI'!

SEE ALSO: HISTORY are bad boys in Berlin in MV teaser for 'What Am I To You'

HISTORY conversed with a man through a payphone and revealed surprising facts about themselves, including the fact that�Sihyung's father is a boxing champion. The boys also opened up about their 19+ rated music video, which portrays how they transform from innocent to bad boys to forget a lover who leaves them.

Learn more about the boys and their new album, 'Blue Spring', through the interview above, and check back in on the 28th for the release of the album!