“It’s been a long time, the LEE brothers✌
They seem to be having a company dinner at a famous chain restaurant known for barbecued/grilled beef organs such as stomach, intestines, etc. The particular chain is probably owned by Park Shin Hye’s family since her name is in hashtags. There’s a branch in Gangnam, Samseong-dong which is probably the one Seung Gi dined at. Here’s the link to that chain: Obaltan. It may sound gross to those who are not accustomed to Korean food, but it’s actually really tasty.
Korean to English translation by Elise, Lee Seung Gi Forever