For example the reason why Ashley helped Grayson to become a firefigther. You might think at that point that it isn't important, but it later actually is. It's the first time you see it in this story.
Grayson inherited a trait from his omega father Koi and Ashley is weak for it. Koi when he was exited moved his ears, later he stopped doing it. Grayson inherited that trait and does it uncontiously, it happened when he talked to Ashley, and that's why Ashley gave in so easily.

Guys what chapter are we on in the novel?