Luna's Angel vs. Celestia's Devil

Inspired by “What’s Wrong With Tia?”

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Suppose there was a mind that took a certain fan fiction he read a little too seriously and personally. Fate decided to curse the man by forcing him into a similar position as the first mind. But perhaps this was a blessing in disguise. While the first mind took over a princess every night, this second mind could offer control of another princess at any time. The only noticeable drawback was that the maximum time limit was seemingly random with each instance. Can this second mind save Celestia from the first mind’s trouble?

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Celestia woke up with even more pain than the previous morning. Out of a sense of automatic motions, she reached out to the sun and lifted it on its way. She had to for the sake of her kingdom. She wasn’t going to make her country suffer just because she was in pain. Still, why did every little noise have to be so loud today?

“Sister?” Celestia called. Her jaw ached and her ears burned but her task required her to speak.

“Luna, are you there?” she asked while wincing from every bodily ache.

“I’m sorry,” replied the voice of Luna, “She can’t come to the phone right now. May I take a message?”

The elder sister lifted her head in confusion. Her eyes opened blearily and bloodshot. Despite an uncomfortable cracking noise that came from her neck, she turned to face her younger sister. Said sister was standing a few feet away from the bed… or so Celestia thought.

“Okay, terrible joke,” said Luna while shaking her head, “My bad, Princess.”

“Princess?” echoed Celestia, “Luna, you are aware that we needn’t use titles when talking to each other.”

“Well, technically speaking, I’m only in the body of Luna,” her sister’s voice and mouth replied, “It still doesn’t feel right to call you without the proper title of authority.”

In spite of her pounding headache, Celestia raised her eyebrow still confused before asking, “Luna, what are you talking about?”

‘Luna’ took a deep breath and audibly exhaled before speaking again, “It seems subtle hints aren’t working. So I’m just going to spell it out for you. I am a person that currently resides inside Luna’s body while her mind has gone dormant.”

Silence followed as ‘Luna’ let her words sink in. The gravity of her words slowly processed in Celestia’s half-awake mind. The unbelievable reality made the elder sister open her eyes wide. She completely forgot about her aches in the face of this new information. She immediately jumped off the bed into a defensive stance.

“Who are you?!” she demanded, “And what have you done with my sister?”

“Simmer down, your highness,” waved not-Luna dismissively, “Luna is simply dormant right now. In a few minutes or a few hours, she’ll return and I’ll be asleep.”

Celestia wasn’t convinced and inquired, “Are you from the same place as the spirit that controls my body at night?”

“Maybe I am. Maybe I’m not,” answered not-Luna in an uncommitted tone, “But I can assure you that I don’t take pleasure in his tasteless form of entertaining himself. Wear your body down until you’re too tired to resist. Honestly, that’s a most clichéd plan if I’ve ever heard of one.”

“So you do know about it,” confirmed Celestia.

“Bits and pieces,” admitted not-Luna, “I do not know his identity. But I can easily surmise that he takes a childish approach with his language.”

“So why are you here?” asked Celestia. To this, not-Luna looked away briefly before returning ‘her’ gaze.

“Frankly, I’m not entirely sure myself,” ‘she’ said with a sigh, “Maybe fate decided to use me as another one of its pawns in this massive game of deity chess. In any case, I want to help both of your majesties.”

“Help?” echoed Celestia, “What kind of help do you mean?”

“Help deal with that bothersome mind that uses your body as its toy, of course,” answered not-Luna in a tone that made her think her meaning was obvious.

“How pray tell do you intend to do that?” asked Celestia.

“Well for starters,” began not-Luna taking a step toward the currently unpossessed princess, “Curaga.”

‘Her’ horn glowed in a soft glow of midnight blue before altering to an equally soft shade of green. Unprepared for a magical duel, Celestia found herself at the mercy of whatever spell that this invader had cast. She squeezed her eyes shut expecting unrelenting pain as the green glow swirled around her entire being. But there was no new pain. In fact, her previous pains started to feel alleviated. Within moments, the external signs of fatigue and weariness faded from her body along with the green glow.

“W…What did you just do?” asked the solar princess with wonder in her voice.

Not-Luna panted as she replied, “Well, I’ll be… darned. Healing… magic… really works.”

“Are you all right?” asked Celestia.

“Don’t… worry… about me,” said not-Luna between breaths, “Just… tell Luna… I’m sorry… for using… so much… of her… energy.” With that, ‘she’ fell to the floor on ‘her’ side.

“Wait!” exclaimed Celestia. She ran over and shook her sister’s body, “I still have questions!”

Luna’s eyes opened as her voice said, “Ugh, what… happened?”

“You just used healing magic on me, remember?” reminded Celestia after moving her hoof away.

“Healing magic?” was the response, “But Tia, we don’t recall doing anything of the sort.”

“Luna, is that really you?” inquired Celestia.

“Who else would we be?” asked Luna raising her eyebrow in confusion.

“Well,” started the elder sister, “It seems that you now also have a ‘spirit’ that dwells within you.”

“What?!” jumped up the younger sister in a heartbeat, “Oh no! What trouble did it cause you while I was unconscious?”

“It… didn’t,” answered Celestia slowly, “In fact, it wanted to apologize for using up your energy.”

“Using our energy?” echoed Luna before holding up a hoof to her head, “‘Tis no wonder we feel drained. How dare a fiend to use our magic for some unknown menacing deed?”

“Actually, it’s because it used your magic that I don’t feel pain this morning,” pointed out Celestia.

“What?” stopped Luna before thinking back, “Wait, earlier thou didst sayeth, er… you did say that we- I used healing magic. Was that the other mind then?”

“So I gather,” confirmed Celestia.

“What do these other minds want with us?” asked the younger sister before clarifying, “You and I?”

“I couldn’t say,” said the elder shaking her head, “All that this new mind said was that it wanted to help us deal with the mind that uses me at night.”

“How exactly did it say it would do that?” wondered Luna with uncertainty.

“Well, it kind of blacked out before it could explain in more detail,” sighed Celestia.

“Wonderful,” muttered Luna before wiping her face with a hoof, “So we are expected to just trust this new entity and hope that it can figure out a way to handle the first. Is this really our best plan?”

“Do we have another choice?” asked Celestia rhetorically.

To this, the younger sister remained silent.

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Feel free to steal this story idea since I have no intention of continuing this.