Taken by a Beast

At that night Anastasia was kidnapped by her enemies, a beast saved her. The Alpha King. Bourne.
Since then, she was taken to his Pack and pointed by him as his Luna.
But that's not what she wanted! She tried her best to escape from him, yet every time ended up being caught by him.
"Since you don't want to be my Luna, then be my breeding slave!" Finally, her escape angered him.
After that, she could only survive by pleasing him in bed.
She thought one day he would kill her, but the truth was, he always secretly protected her.
She didn't know why he insisted on keeping her with him, until the day, she found the reason and the secret of his pack...which were enough to turn her whole world upside down.