I Can't Love You More Than a Thousand Years: Crystal Brings Back Memories of Love

In the previous life, they died together and sealed their memories in the crystal. The crystal triggered the memory, "Never forget you and me." Thousands of years later, the crystal reappeared, and their love remained undiminished... In this life, they were reunited because of the crystal. How did they regain their memories, clear the fog, and keep the clouds clearing to see the moonlight... The crystal guided them to look back on their eternal love.