Song Jae Rim is busy brushing up on his kendo skills for his role in the KBS drama "Unkind Women."

Already the actor has earned praise from bystanders for his perfect kendo moves and focus. And that's good because he is playing the role of Ru Oh a kendo instructor.

If you're wondering what kendo involves, it is a Japanese martial art descended from swordsmanship. Instead of swords, kendo practitioners now attack each other with bamboo sticks. Although that means it's not likely to result in casualties, it can still be physically challenging and exhausting.

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