Singer Brian Joo recently revealed his whereabouts. The star updated his Twitter on March 25th with a new photo, whose caption read,"Getting ready at the salon. I have to do filming well today". In the picture, he's seen wearing a cute Ironman hat with a matching cute expression on his face. His young appearance makes the fact he's 31 years old quite unbelievable. Netizens commented, "I was wondering what you were doing, it makes me happy to see you well", "Does this oppa eat preservatives too? His appearance is the same as before", and "It seems like he's a newly debuted idol". Source: Daily Sports via Daum