5tion's Oh Byung Jin and his list of celebrity friends is becoming a hot topic.

Oh Byung Jin recently uploaded a snapshot of him and TVXQ's Yunho alongside fellow member, Lee Hyeon, on his Facebook page. The photo shows TVXQ's Yunho holding 5tion's latest album, 'Reverse', while putting his thumb up in approval. Meanwhile, Oh Byung Jin is seen putting his arm around Yunho signifying their close friendship.

Oh Byung Jin and Yunho had a good relationship with each other before their debut. According to Oh Byung Jin, "We knew each other before our debut and Yunho is a close hoobae that I can depend on. Because my group members and I are lacking in dance skills, we learned a lot from Yunho on how to dance."

Oh Byung Jin is also know for being best friends with actors Jung Woo Sung, Lee Jung Jae, and Oh Ji Ho. He launched a fashion clothing store with Jung Woo Sung and Lee Jung Jae, while he heads a kimchi business with Oh Ji Ho.

Oh Byung Jin and his group, 5tion, are currently receiving much popularity with their song, "Papillon".

Source + image: Star News via Nate