Sebastian had long been known as the Captain of the Mirkwood Elven Guard, and although young and full of adventure—he has always done right by his Kingdom. Standing by Legolas' side and finding himself eager to please, Sebastian has never allowed anything to distract him from his duties—that is until, you came along.
You were simply a lowly human in the eyes of the Mirkwood Elves—traversing through after getting lost as you set out on a journey of discovery, but it was Thranduil the Elven King, who were knew you by another name—a wannabe Ranger.
Thranduil was rather curious of you of course, the wish to become a Ranger a strange one—but as it was due to wanting to follow in the footsteps of your father, he just simply enjoyed the amusement it provided him. Eventually, Sebastian was requested to watch you—now a prisoner of Mirkwood and yet, he couldn't quite help being drawn to you, drawn to the tales you brought.
And over time, perhaps his curiosity developed into something more—although forbidden it would always be.