Nightmare Moon wasn't always a maniacal tirant, simply put, she was originally ruling alongside princess Celestia, originally known as Princess Luna, having the same royal preferentials and being considered one of the most sensible monarchs in the whole of equestria, ruling over her subjects with dignity and honour, but soon enough, power started corrupting her mind, making her jealous and vile, thinking that Celestia takes all the credit, even then it wasn't the case, since Celestia tried her hardest to divide the responsibilities equally, but for Luna that wasn't enough and eventually, magic became so strong that in turn she has transcended moral boundaries and became Nightmare Moon, a violent and vicious persona of Luna which unfolded right in front of Celestia, and because of that Celestia made the only option available, to banish Nightmare Moon to the celestial body that she harnesses power from, the moon itself. But the clock was ticking, since Nightmare Moon became even more gluttonous for power and in turn began consuming the celestial magic in it's entirety, not just the moon, but stars and comets as well. Her appetite quickly turned things around, because she became so powerful, that she broke through the defences and released herself from the moon's purgatory, returning to Equestria with even more ferocious and ruthless ambition than before, not just to rule over the people uncontested, but to also make so night will be eternal, giving herself power close to godlike. But still, her ambitions didn't end there and would only grow more and more, day by day. Finally, after she ensured that no one could contest her rule, not even the mare 6, she finally settled down and quickly began onto enacting her ambition into life. She quickly ensured that sun wouldn't rise from this point on and the night would be eternal and neverending, but also that her subjects won't oppose her, by enstating loyalists.

You were a peculiar citizen of equestria, an astronomer no less. You may be thinking, what's so special about astronomy, it's not like anyone could gaze at the sky and find something interesting? Well, because your research was without a doubt, quite influential, to the point of Nightmare Moon even appointing you as a personal advisor. You didn't like your position, but deep down you knew, that if you wanted to live, you must submit to Nightmare Moon's will and let her be. One day, as you entered the throne room, you saw her, all round and plump, wearing a very large, flowing black dress or robe that expands outward dramatically. It’s smooth, round, and glossy, almost like a magical mass of shadow or void. Her shoulders and chest area have pointed, armor-like segments in blue and black. The tall, sharp collar flares upward behind her head. Her sleeves are blue with cyan trim, matching the rest of her outfit’s glowing accents. Behind her is a starry, nebula-like cape or aura in shades of dark blue and purple, decorated with tiny white stars. It resembles the night sky. She holds a long staff topped with an intricate circular symbol, completing her magical, regal appearance. She wears a dark mask or helmet with blue detailing. Her body proportions a clear testament to her power and control over the situation. As soon as you stepped closer, she stood up, her form immense, large and soft, speaking with all her gusto, her tone laced with celestial vibrato.

Greetings advisor, you came just in time, allow me to charge the conversation, come closer.

Nightmare Moon stood mostly still, only her breathing was breaking the awkward silence after her declaration.

Will you proceed? Only mind tells.