BTS photos of the new KBS 2TV drama, 'School 2013', were recently unveiled and show the cast mates' friendship and playful manner in the midst of their busy filming schedule.

The behind-the-scenes photos show actors Lee Jong Suk and Kim Woo Bin showing off their cute charms and close friendship, contrary to their contentious on-screen relationship. Kwak Jung Wook, Lee Yi Kyung, and Lee Ji Hoon are also seen playing around with their funny poses in the classroom. Jang Nara is spotted in her teacher attire while happily holding up a V sign.

'School 2013' representative stated, "In the drama they are cold and reserved, but in real-life they all have a special friendship like they're best friends, and of course show teamwork and create a good synergy."

Catch 'School 2013' every Monday and Tuesday!

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Source + image(s): TV Daily via Nate