
He is generally considered to be the most talented martial artist in the entire universe across all races and it's not even close. But due to wanting to live forever at all costs, he becomes the servant of the wandering martial god and is used as some sort of a pawn by both the wandering martial god and JiHan to make them stronger until he died, because the wandering martial god commanded him to kill himself.
To give some context as to how strong he was... He can oneshot grand constellations, he defeated an administrator, and it only took him a few days of training, with both JiHan and the wandering martial god constantly setting him back to do something that JiHan admitted he wouldn't be able to do in a decade.

He goes after them to get their powers. The constellation equipment he has on the fight star is how he carries the power into next regressions.
And elves are fucking weird. They are backed by the Green Administrator, they are after all sorts of evolutionary bonuses from Battle Net and they experiment on other races to make their own stronger. In part 2, they even make male half-elves from humans to produce JiHan's "Blue" stat, which is the natural enemy of the Red Administrator.

She gets what she deserves xD
Though much like most antagonists in the novel, it's a slow process and she manages to run away a bunch of times, before dying. After death, her constellation tries to reclaim her soul, but JiHan extinguishes her soul completely, so that the constellation cannot take back her Gift.
Funnily enough, he looks just like I imagined him from the novel. What happened to him is quite sad.