I.n.v.u.

From Tokyopop: When Yuna Lee's mother moves to Germany to pursue a music degree, she's left to stay with her father, a university professor, and her three older brothers, who are fiercely overprotective of her. During her summer vacation, she visits her mother in Germany, where she falls off a cliff and is rescued by Rieno, an 18-year-old knight living in the land of Phantasma. Rieno makes a deal with Yuna that because he has saved her life, she must marry him and become his queen. Indebted to him for saving her life, Yuna is torn between her normal world back home and life as Phantasma's Queen 

Plot: One morning, 16-year-old Sey's world is turned upside down when her mother announces she's moving to Italy to finish her novel. She's made arrangements for Sey to live with her friend, Meja, and Meja's creepy daughter, Terry. Not exactly Sey's ideal living situation, but she has no other choice. Sey has a killer crush on a teacher named Mr. Cho, and she's beyond shocked when she learns that Terry knows him well ... VERY well. And so begins I.N.V.U. (I Envy You) - a hip, moving, topsy-turvy look at the lives and loves, trials and travails of 4 teenage girls.

When Yuna Lee's mother moves to Germany to pursue a music degree, she's left to stay with her father, a university professor, and her three older brothers, who are fiercely overprotective of her. During her summer vacation, she visits her mother in Germany, where she falls off a cliff and is rescued by Rieno, an 18-year-old knight living in the land of Phantasma. Rieno makes a deal with Yuna that because he has saved her life, she must become his queen. Indebted to him for saving her life, Yuna is torn between her normal world back home and life as Phantasma's Queen.