A light-year against the current, a point of light in the universe.
She was once a planet, orbiting alone for hundreds of millions of years.
After falling into the world, she became a killer and learned to love. He is a star, burning himself just to protect her.
Purpose: "As a planet without the concept of good and evil, learn what 'sin' is, what 'punishment' is, and what 'humanity' is in the human world."
