BTOB Yook Sung Jae shows off his muscular arms that grab the attention of the female fans.
Yook Sung Jae on June 23 uploaded a photo on his personal Instagram.
In the photo, Yook Sung Jae, showing off his well-built shoulders and biceps.
He looks in the mirror and shines more than his fitness trainer to make his female fans fall in love.
Recently, the same team member Seo Eun Kwang also uploaded a pic of his six pack. The day that Yook Sung Jae showed off his body line is very eagerly awaited by his fans.