Seoul Station is much the same as Train to Busan it follows a crosscut of characters as a zombie outbreak occurs. In Train to Busan, the outbreak has happened all over the country and, as we start watching, is taking over the train; here we see as it hits the streets of Seoul (the film only takes place at the title location during the early sections). Interestingly, we never get to find the cause of the outbreak in either film.
The zombie film has been mashed up with almost every genre in recent years but has not exactly made any inroads into animation. There have been odd efforts such as Dead Fury (2008) and The Amazing Adventures of the Living Corpse (2012) but these have not exactly stood out. The only one to gain any notice was Night of the Living Dead Reanimated (2009), although that cannot be fully considered animation, and before that the B-17 segment of Heavy Metal (1981). The problem I suspect is that horror and animation have never been a particularly effective mix. Here, for example, you cannot help but think that the gore and splatter effects that would have worked in live-action seem considerably the lesser when they are rendered as merely a red streak or blotch on someones face or clothing.
That said, Seoul Station works fairly entertainingly. It doesnt quite kick in with the pure pleasure that Train to Busan did. Nevertheless, Yeon Sang-ho gives us some fierce massed attacks with Hye-sun and others being pursued out of the station and through the streets. There is a wonderfully tense sequence with her and several others placed in a jail cell surrounded by zombies outside at the same time as one of the group locked in with them turns. Yeon Sang-ho draws in plain, clean lines but you can also see that a surprising degree of detail placed into the background. And the film works as a fairly solid zombie entry.
The only negative point for me was the characters or at least the way the film spins their arcs. The story follows three people Hye-sun, her weak-kneed boyfriend Ki-woong and Suk-gyu as her traditional hardline father who has come to rescue her. These are well established and work fairly well. [PLOT SPOILERS] However, right near the end, this is twisted on its head as all three meet up and it is revealed that Suk-gyu is not Hye-suns father but that she was a former prostitute and he was the pimp that she fled from. This throws all of the sympathies that we had invested in the characters considerably offbeat and not in a positive way either. Furthermore, the film also goes on a real downer of an ending with all three characters dead.