I had a feeling it was going to happen, especially after the start of episode 9.
I think it will be ES. He has generally been presented as naive, and he absolutely cannot defend himself. The trailer for episode 10 tries to seem more dramatic and depressing. If they wanted to have a really sad moment, it would be ES because he is really childlike and innocent. It would also cause tension between Yi Gon and JTE because of how much she cares for ES, and the writer would absolutely love to insert some angst.
Yet another instance where the episode is carried by WDH. I can’t really fault him in this drama, his characters are both so interesting and entertaining. Definitely the best part of the show.
I honestly feel so invested in the side characters. Not a big fan of the romance or mains, but I like concept of the parallel worlds. We will have to see where it goes, but I do prefer the shows comedy and drama over the shows romance. On a side note, the cinematography itself is gorgeous.
But I could be wrong. I’ll be sad either way.