On a planet far, far away from Earth, there reigns a kingdom overflowing with smiles. Princess Yuki is twelve years old and beginning to ride the roller coaster of emotions that comes with adolescence. Each day brings with it tears, laughter, and even a little romance. The palace is full of fun, and the vassals who serve her there add color to her life. Seventeen-year-old Stella is a brilliant warrior. Even though she is cool as a cucumber, she never fails to smile. That's because smiling is essential to life. This is a story about two girls born on a distant planet.