He is an elf who protects nature, but he appears in human society in a suit and leather collar, and lives an ordinary life like humans.
She is an ordinary girl, but optimistic and cheerful, like a sunflower always looking at the sun.
A beam of light brought him to her, and from then on he became an inseparable part of her life.
He vowed to protect her for the rest of his life.
She said: "If you hold my hand, you and I will grow old together. You will be responsible for heaven and earth, and I will be responsible for earth and earth."