The 'Book of the House of Gu' cast got together for an amusing photo!

Actor Yoo Yeon Suk posted himself and fellow cast members Lee Seung Gi, Suzy, Lee Yoo Bi, and Jo Jae Yoon posing as 'Power Rangers' onto his me2day. Along with the photo, he wrote, "We are the disciples of justice that protect the hundred-year artifacts! The Power Rangers of 'Book of the House of Gu'!!! In the name of justice, we will never forgive you, Jo Kwan Woong!".

The five actors were posing in their own comical way. Suzy brought out her playful aegyo, Jo Jae Yoon and Lee Seung Gi struck comically serious poses, Lee Yoo Bi was doing the flower-petal pose, and Yoo Yeon Suk couldn't help but burst into a smile at the poses.

Do you think these 'disciples of justice' will be winning in the episodes to come?