Hot Springs Diamond is a character is Color Changers.
Around 5795 years ago, Hot Springs Diamond met the Color Changers. The latter, jealous for his power, imprisoned him in a safe, placed in the core of the planet Herakelos.
5795 years later (the present), Color Change Iolite accidentally freed him and he escaped the planet and flew to "Ytertse", where he sustains that "any kind of Diamond or high-ranking being has access to a complete and wonderful life".
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