Jin, the oldest member of K-pop mega-band BTS, has entered military service - the first of the group to do so.
The 30-year-old posted a photo of himself with his new military haircut before enlisting.
As South Korea is still technically at war with its hostile neighbour North Korea, all able-bodied men are required to serve in the army.
Jin has begun five weeks' training at a bootcamp near the North Korean border.
After this, he will reportedly be assigned to a frontline unit.
Source: BBC
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