All of Us Are Dead has two main couples, and after On-jo and Cheong-san were given all the attention in season 1, it's time for Nam-ra and Su-hyeok to have their time in the spotlight. While All ...

When Cheong-san realizes he was bit, he vows to On-jo that no one else will die. It is a custom amongst Korean teenagers to exchange school name tags with the person they have a crush on.

In All of Us Are Dead Episode 11, Cheong-san gets a tearful end when Gwi-nam bites him. Realizing he could turn, he gives On-jo his name tag to hold on to. They also have their first kiss.

Cheong San was perceived as the main character in All of Us Are Dead season one. His will-they-won't-they romance with Nam On-jo (Park Ji-hoo) drew viewers in as their chemistry was undeniable.

Yoon stars in the Korean Netflix hit as Cheong-San, one of the characters caught in the middle of a zombie apocalypse. In the series, he is in love with his next door neighbour, On-jo (Park Ji-hoo).