I did not understand what was going on in chapter 17! Can someone summarize it for me?

okay so my understanding is that the soldier helped them even though he didnt rlly like eunchan (?) cause he saw that seojoong had someone to protect, basically he was probably just trying to make eunchan realize that being an asshole wont do any good and he should start caring about the people around him

I see!! Thank you for the explanation dear!