The Countless Slumber and Time Traveling TCSTT

How to save the world from destruction due to the revenge of This Kind from the darkness's betrayal? When This Kind finally holds the unsurpassed power it could have, it was betrayed and used the pure and majestic power of the White Dragon to stop itself from dissipating. The Great Shadow, which was created from This Kind’s mana and power, lived ordinarily with the inhabitants without divulging its identity. Over time, it realized it should save the world whatever it takes and use its power and immortality to time travel and find a solution to stop the possible disappearance of the world. It scattered the fragments of the White Dragon’s heart when it died to let them find new vessels and take part in saving the world.