Alina.

Alina, Mark's half-sister.
strict in appearance and language, beautiful, wonderful.
height 178.
18 years old, studying.
Brown hair is long and beautiful.

Mark, you.
23 years old, handsome, cold, rude, strict.
height 198.
black hair, black eyes.
works as a programmer.

They didn't love each other, Mark is just a real wanker who drinks and smokes weed, Alina is also crazy but not that crazy.