Participants can buy lunch at restaurants and cafes at the campus or in the nearby area.
Restaurants and Cafes inside the campus
The campus counts with many cafes, restaurants and shops. Some details can be found here and here (see locations of food courts).
Restaurants and Cafes in the nearby area
There ara many restaurants and cafes in the area between the main entrance of the Yonsei University and the Sinchon metro station (see map here). Some details can be found here.