A serious college student and a friendly Chinese international student find the answer to their love problems in each other!

Yuu is as industrious and hardworking as a college student can be, but that means guys tend to find her serious demeanor intimidating. Should she have to change her strong-willed personality to be "number one" in someone's heart? Yang is a puppy-like Chinese international student who wanders into Yuu's life after she rescues him from a tricky situation. He asks her to be his bodyguard, and they form a new "professional" relationship. But soon, deeper feelings begin to take root...