The defence ministry of South Korea says popular K-pop boy band BTS will have to do compulsory military services, reaffirming its policy of no exceptions for pop stars.
This may fuel a debate in South Korea, which remains technically at war with North Korea, about whether entertainers and athletes should have to do their full military service.
The duration of the military services would be about 18 months and will come when they are at the peak of their careers.
Athletes may be granted exemptions if they won gold medals at the Asian Games or any medal at the Olympics.
Other than that, classical musicians who have received awards at recognised international competition can be exempted from military service.
Footballer Son Heung-min who plays for the English Premier League side Tottenham Hotspur, was given an exemption but only after he helped the South Korean national team win gold at the Asian Games.
Every year, fewer than 45 people are exempted from service according to the defence ministry.
South Korea has nearly 600,000 soldiers and most of them are conscripted.