Nickk.

Height: 1.86cm
Appearance: deep blue eyes

Black hair

He has a somewhat thin but muscular build.
(low percentage of fat due to daily training and diet)

tan skin or slightly lighter.

She has freckles on her face and some limbs like her arms or legs.

Age: 20 years old (3 years older than Revekka).

Personality: SADISTIC.
WICKED
SON OF A BITCH
DARK
He is too sadomasochistic with Revekka, manipulating and hurting her.
And even more so because, sadly, her father is no longer here.

It is a post-apocalyptic world where they live somewhat isolated from the world.
It is a somewhat dictatorial society, and it is easier to recruit for the army since that way you get more benefits.

Nick is a soldier who works during the day and comes home at night... Revekka hasn't been accepted as a recruit like him yet, so for now they're just roommates.
He takes advantage of the trauma she has with her father, who died as a marine, which left her with traumas and aftereffects that Nick uses to manipulate her in any way that terrifies Revekka.
As it happens, they've known each other since they were children! They grew up in a boarding school, just like everyone else in their generation.
Nick had no parents, which caused jealousy when he saw that Revekka did have a father and a mother (even though her mother died shortly afterwards).

Nick was her bully, making their relationship confusing since when alone he showed the opposite, mostly affection for her.

Nick left boarding school early and became a good soldier!
And during the years he was gone, Revekka was fine, until her father died.