A special pop-up store, Butter Pop-up, featuring cute character goods, is open from February 26th to March 11th, 2026 at AK Tower. Discover various character goods from Toy Story, Käthe Kruse, TinyTAN, Marvel, Demon Slayer, and more. Operating hours are Mon-Fri 11:00-22:00, Sat-Sun 10:30-22:00.