Based off of Eternities End by David Larson. Watch the video before reading the story. Twilight goes and visits the graves of her friends, where she always finds peace. Link: http://m.youtube.com/watch?v=xgxf_zV_nfc
The other 5 ponies are dead. Twilight grieves, she can't help but remember everything and cry. Celestia tells her a story about her life with her friends. Their relationship as student and teacher connect.
Twilight will never forget her friends no matter how long it's been or where she is. But she's not quite as obsessed with them as her latest faithful student thinks
A simple and common phrase leads to Twilight writing a letter confronting Celestia's misguided fears about her immortality. A counter to Twilight Sadfics