"Chrono Cross" is a role-playing video game developed and published by Square (now Square Enix) for the PlayStation console. However, there is no specific reference to "dream fragments" in the context of Chrono Cross. It's possible that you might be referring to a specific aspect of the game or a fan-made concept.
If you're looking for information about the game "Chrono Cross" or any elements related to it, feel free to provide more details, and I'll do my best to help.