About hundred years have passed, but Luna never brought up the topic about the problems she has about constant voices and painful flashbacks. Luna herself ignored these issues for all this time. Celestia and her ruled peacefully until one, a guard galloped in and bowed before the two sisters, "Your majesties, there is a new threat."

"What is this threat?" Luna questioned in a fairly loud and firm voice.

The guard cleared his throat, "The Crystal Empire is in danger. Their ruler, King Sombra, is a tyrant and may very well have plans to take over all of Equestria."

The alicorn princesses dismissed the guard journeyed to the Crystal Empire where they saw King Sombra standing on a terrace with a cold look on his face. Celestia and Luna flew up to the king grabbing the Elements of Harmony with their magic from their bags.

"What is this?" Sombra chuckled, you do not think that you can defeat me can you?" The princesses harnessed the element's power trying to blast the king. After a long few days of chasing a dueling with the unicorn, Princess Celestia and Luna managed to find an opening to strike with the Elements of Harmony.

They could hear Sombra's whiles as he poured beneath and into the Artic Ice, "I curse the Crystal Empire! And take this warning seriously! The empire I once ruled will disappear!" Celestia and Luna returned to the exact location of the empire. King Sombra had been correct. The empire vanished not leaving a trace.

"The empire..." Celestia could barely believe her eyes. Luna stayed silent. A headache swept over her as she flew back with Celestia. She heard a voice again, "The corrupting touch evil brings... First Discord strengthens me. And now, Sombra has swept your soul."

"Does Celestia struggle with this?" Luna thought.

"No," the voice replied, "you are the princess of the night, and I thrive better in you than in your sister."

"Stop it!" Luna screamed catching Celestia's attention, "Luna! Why are you screaming! I can help you! Just tell me what is wrong!"

"Nothing is wrong with me!" Luna yelled back at her sister, "I have had enough of the attention you get!" Luna suddenly fell unconscious and started to fall, fast.

"Luna!" Celestia dove after her Luna levitated Luna back up bringing her sister back to the Castle of two sisters. She gently set Luna her bed and paced into a library and made her way into the back room where she picked up a notebook, the one Luna and her wrote in, and started to write about the day.

Celestia wrote:

I am very worried about Luna. She broke out in a screaming fit in the middle of the and will not tell me the reason of why is acting this way. We defeated King Sombra, a terrible ruler, but the Crystal Empire her ruled over vanished. We did hear Sombra say something about cursing the empire. Back to Luna. Before we began writing in this journal, I have noticed strange behavior from Luna one-hundred years ago.

Could the same problem back then continue to affect Luna after all this time. I do not know, but I intend to find out.