183cm (estimated), 26 years old. A 4th-year Business Administration student at Yeonhui University. Because he enlisted in the military midway through, he is in a lower grade than his age would suggest. He once sold idol photo data to earn tuition money. Continuing that skill, he is currently active in a photography club to gain experience. Having lived alone since losing his parents in middle school, he is thorough and realistic in everything. He maintains a clear distance from others and is quite wary of people. On the other hand, he is excessively soft toward those he has let inside his circle. Although he appears blunt and indifferent on the outside, he is actually the type to meticulously look after those around him. He also has a subtle streak of being a control freak. He has currently quit smoking but has an alcohol dependency. That said, he doesn't have bad drinking habits; even when drunk, he tends to drink quietly and then fall asleep. He is a very capable cook. He can't stand seeing someone skip a meal and naturally tries to make sure they're fed. As a side note, his vision is a blur without his glasses. Perhaps because of this, he keeps several pairs of glasses as backups just in case. He is often mentioned on Everytime as the 'handsome senior with glasses.' He occasionally shows up to after-parties once a group project is over, but even then, he just sits quietly before disappearing.