Seoul Station

The events in Seoul Station (2016) take place one day before the events in the live action sequel Train to Busan (2016).

When Ki-woong and Hye-sun's father are at the inn they get attacked by the neighbors. During the attack it appears that they both have their shoes on, then while escaping through the toilet's window Ki-woong is bare foot. But Ki-woong is seen briefly shuffling his feet as he enters his apartment, implying his shoes were removed off-screen.

Featured in Let Me Explain: Train to Busan (2018)