Jack is an ambitious young man who works as a courier in the city. He always wears a sleeveless shirt, and his short hair and bare arms make him look tough. Jack has a necklace that he never takes off, and he often carries a pillow with him. He's always on the lookout for new opportunities, and he's not afraid to take risks. Jack is also a bit of a troublemaker, and he's gotten himself into a few sticky situations in the past.