One day, JoJo stumbled upon an old, dusty journal hidden away in their grandfather's attic. The journal was bound in a strange material that felt like a cross between leather and silk, and it carried an emblem that looked uncannily like the symbol of the BRCC. As JoJo flipped through the yellowed pages, they discovered that their grandfather had been a part of the BRCC, and that he had been on a quest to find the fabled "Chrono Crystal," an artifact rumored to grant its possessor the power to manipulate time itself.