Responses
it's hard to explain without spoiling anything, but it kind of stems down to the personal issues of Baese and Keunse. They have a lot of differences but became closer after overcoming those issues. It's kind of like a plot line in the novel at some point, but they do resolve issues surrounding that.
Does Sejin A not like Big Sejin?! For reference I just left off at ch84. But Sejin A seems to always have a problem with anything Big Sejin says to him I don’t quite understand why.