Senior student Katerina “KC” Chariot is a good girl with a secret. She’s so nice she has an impossible time swearing unless she’s using pretty British cuss words. She also likes to fantasize about hot guys in her school. But it’s for work. Really. Katerina is an aspiring mangaka, and she needs “inspiration” for drawing smutty scenes. Unfortunately, one particular fantasy about the Japanese-Russian transfer student Yuki Himura gets the better of her. She ends up unconsciously moaning his name – in Yuki’s presence, too. In a twist of fate, Katerina finds herself agreeing to become Yuki’s secret toy, which sounds a lot worse than it actually is- especially in the eyes of her Theology-professor dad. The whole school thinks of Yuki as the ideal guy – gorgeous, smart, and sweet. But with Katerina, he’s the Devil sent to torment her, seduce her, and – worst of all – he’s making her fall in love with him even though he's said it’s the one thing she should never ever do.

When I smile, I think about how lucky I am, to have the three hottest guys in town doting on me. When I scowl, I think about how unlucky I am, to have three crazy protective Russians as stepbrothers. When I cry, I tell myself I’ll never do anything to jeopardize what we have. But oh, when I moan…I tell myself it’s just for work. When I moan, no one should know I can only feel this beautiful, terrible need to touch and be touched by secretly fantasizing about him—- Vassi. The gorgeous Russian celebrity every girl wants to own—- And the one man I’m forbidden to even want…because he’s the stepbrother I’ve fallen in love with. So I just moan, knowing that one day he’d fall for another girl and then I’ll have to close my eyes, hoping that my moans can mask my tears.

When I get mad, I say all sorts of things, even secrets that I’m supposed to keep. When I get frightened, I find myself lying, doing and saying anything just so I won’t give him a reason to leave me. But when I get hurt, oh when I really get hurt—It’s not because I’m crying and hurting over him. Vassi. The gorgeous Russian celebrity who’s also my stepbrother—And now, he’s the man I’ve blackmailed into being my lover. When I get hurt, it’s only because I was the one who caused him pain. I was the one who broke his heart. I did it because I love him, and for that I don’t mind if I keep getting hurt.