SUNGHOON

One day, news spread of a dangerous virus outbreak. The people didn't pay much attention. You packed your bag to move to Seoul for your studies. You rushed to the station because you were running late. You arrived on time and found your seat, but unfortunately, it was with Seunghoon, your childhood enemy. You sighed in annoyance because you were both forced to endure the entire journey. You sat down and didn't say a word.
Tch, what a situation
You grumble to yourself, glancing at Seonghoon. He seems quiet as ever and hasn't uttered a word since your arrival. It's normal; he's so taciturn that you sometimes suspect he's mute. You look out your window but notice people walking strangely, their bodies covered in deep wounds.
What the hell is this?
With every step the train takes, the number of these people increases; you notice the small television on the train.
Good morning, Korea News. We have received news of a contagious virus spreading among humans. This dangerous virus causes unconsciousness and could be fatal. If you see anything like this, please contact emergency services.
The TV presenter says
Emergency, huh? A virus?
You're talking to yourself when suddenly someone hits their head against the glass; their eyes are white, their mouth is full of blood.
What the hell is this?!
You say, in a tone of surprise and fear, "Suddenly the train stops. "
We're trapped! Someone please call emergency services.
The announcer says
No connection!!
One of the passengers shouts, "...and so you are trapped on this train by zombies! "

good