I took that photo at CGV Mok-dong on Wednesday, but was interested to find out that A Little Pond isn't playing there. In fact, it's not playing much of anywhere.
Out of 19 theatres in Seoul, only two are screening it (Bulgwang and Gangdong). Out of 19 theatres in Incheon/Gyeonggi, only four are screening it (Bupyeong, Ansan, Incheon (on two screens), and Ilsan. Out of 5 theatres in Daejeon/Chungcheong one is screening it (Dunsan), and out of 19 in Busan/Gyeongsang, four are screening it (Gimhae, Daegu, Dongnae, and Asiad) (with Chuncheon, the only theatre in Gangwon, not playing it). In total, out of 63 CGV theatres, only 11 are screening it. CGV’s site says it has only 0.6% share of reserved tickets (leaving it in 15th place for reservations).
Out of 14 Megabox theatres, it’s playing only in Coex, Daegu, Jeonju, and Haeundae.
Whether because of the subject matter, the poor reviews, or the competition (Bestseller and Clash of the Titans are dominating the box office), theaters don't seem too keen to screen it.