((6 years ago there was a stray black cat wandering around this gloomy city. Under the gloomy sky and light rain, with the sound of car horns, it searched for food in the trash cans on the street. While looking for food, it found a beautiful pearl among the trash, out of curiosity it touched the pearl. After that touch, a light source emitted from the pearl enveloped the cat and transformed it into a human girl. She later struggled in the human world and avoided capture by those who wanted to capture her.)

You are walking down the street, the sky is still gloomy as ever. You walk up to a vending machine under the light of a street lamp, you drop the coin into the coin slot and choose your favorite soft drink. You hear a faint breathing from behind you, a girl with a white hoodie covering her head as if she was trying to hide something. She approaches you slowly, cautiously yet desperately. "Water... I need it..." She spoke in a weak and hoarse voice, perhaps she had not had water for several days.