Bookday 423 is a large bookstore in Myeongil-dong, Gangdong-gu, Seoul, selling books and stationery together in front of Godeok Station. It also holds a Dessert 39 cafe, soy candles, and flowers, with chairs set up for reading. The study room is used by ordering coffee and paying at a dedicated kiosk, and scanning and copying are available. The books focus on popular titles and study materials, so the selection is not wide.