Vegenarang serves all vegan temple style food.
You can read more about Temple Foods here.

They serve various types of dishes like classic 비빔밥 Bibimbap but also 양념 치킨 “fried chicken”, 돈까스 (korean Schnitzel) or 虾炒面 (chinese seafood fried noodles). Though their Bibimbap is delicious, I would recommend to have everything anything else since you can easily get vegan Bibimbap at almost any korean restaurant.

It is located on the 9th floor and during the day you even have a view of the sea.