From the beginning, it could only end one way. Nopony lives forever. All good things must come to an end, no matter how much we must wish that this not be true. Death is inevitable. Twilight Sparkle is dying. She has lived a long, full life, having outlived all of her friends, but it is now coming to an end. She knows that there is no escape, after meeting a young filly at Canterlot Castle during a visit with her mentor. The end is nigh, but she will not face it alone.
Sad Dark Slice of Life