How zealous K-pop devotees celebrate birthdays of their idols

Celebrating idols' birthdays is big business in South Korea. Photos: Handout and ANN

Signboards welcoming bypassers for a cup of joe, the scent of a fresh bag of coffee beans, little nooks for a sip and music playing in the background are no different from an ordinary cafe.

But cafe buffs would see a minor tweak to the definition once stepping inside the venue.