Pick from a dozen-plus kouign amann flavors including pistachio, earl grey, tiramisu, and ang-butter, with cinnamon rolls as the other house specialty. The Seongsu flagship opened in 2021 with a bright, gradient-painted facade. Seating spreads across multiple floors, with the coffee counter tucked in the basement. A second branch opened later in Yongsan. Closest station is Ttukseom (Line 2), Exit 8.