'Heirs' treated fans to more BTS photos!

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The BTS photos released on the 15th show Choi Jin Hyuk (Kim Won), ZE:A's Hyungsik (Jo Myung Soo), Kim Ji Won (Rachel Yoo), Kang Ha Neul (Lee Hyo Shin), Kim Mi Kyung (Cha Eun Sang's mother), Yoon Son Ha (Rachel's mother), and Choi Won Young (Chan Young's father) noticeably enjoying their time on set.

A rep commented, "Although the characteristic atmosphere of 'Heirs' which features various characters could have fizzled out, the young to middle-aged actors put to rest any worries by displaying their perfect teamwork as they formed a close bond with each other. We ask that you show a lot of love for 'Heirs' which is filled with the actors' passion."

Catch 'Heirs' every Wednesday and Thursday!