Actor Park Seo Joon posted a photo on his Instagram with Hyungsik and V, demonstrating a brotherly bond among the 'Hwarang' cast. The actors had attended BTS' concert in Seoul. The caption cleverly reads, "I recognized you at first sight," a line from BTS' "DNA".

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Another photo featured V with actress Ha Ji Won as the two looked like siblings in front of the camera. The caption read, "Every moment was a perfect stage just like a movie.  BTS is the best in the world!"

첫눈에 널 알아보게 됐어

A post shared by 박서준 (@bn_sj2013) on Dec 11, 2017 at 1:19am PST

매순간 뮤비같은 perfect 한무대. 역시 BTS. 세계최고!✨