K-pop singer Jaejoong, a member of JYJ, appears in a photo taken during the singer’s mandatory military service.Jaejoong, 29, enlisted for his military service on March 31.Jaejoong is a member of K-pop trio JYJ, which also consists of members Junsu and Yoochun. Jaejoong is the first in the group to enlist for his military service -- Yoochun plans to follow in late August.The photo of Jaejoong wearing a white T-shirt and a necklace was posted on a fan’s Facebook page Saturday.“The team of ‘Spy’ went to visit Jaejoong,” said the caption. “Spy” was a TV drama that Jaejoong appeared in earlier this year, which ran from January to March.Jaejoong will fulfill his military duty until Dec. 30, 2016.By Yoon Sarah ()Related article: Jaejoong wows fans in military uniform