I feel like there was a missed opportunity there with Jhin's color text.

When he's wiping down the gun, he thinks to himself "Four times makes it clean."

But why not "Four makes it clean."?

His OCD-style obsession with the number 4 expands beyond repeating the same action four times, like how the fourth bullet in his gun is the "Final Act" in terms of attacking people.

Also, this line seems like the kind of thing he repeats to himself a lot, almost ritualistically. It would make sense for the line to have four words and sixteen characters, seeing as how he probably thinks about it a lot.

Just my opinion though, on one individual line. Overall the story is really cool.