Influenza (2025)

Both are a story that take place in apocalyptic setting, they are about human survival against deadly creatures like zombies, alien, etc.

Both Influenza and Train to Pusan are related to zombies. And both the stories are related to zombie outbreak and how the leads fight the zombies.

Both these dramas are related to zombies and they pretty much are related to how they save themselves from the sudden zombie outbreak.