Twilight had watched her friends, one by one, wither away. Now two were left. Both were pegasi. One was on a deathbed, the other the Curse of Immortality. Fluttershy had received the Curse on the day of her wedding with Discord. Rainbow Dash was dying of old age in the hospital, spending her last moments with her curse-bearing-friends. The Curse that she thought was a blessing when it wasn't.
"Twi," the cyan pegasus wispered, "I-I wan'na fly o-one last t-time." She saw the lavander alicorn purse her lips.
Rainbow looked down knowing the answer.
"Okay," she heard. She looked up at her purple-winged friend.
"Really?"
"Really." Rainbow started sobbing. She sobbed for a few more minutes.
"Thank you," wispered a still-sobbing-Rainbow Dash, "Fluttershy, will you and Scoots fly too, please?"
"Of course, Dashie," replied the buttercream yellow pegasus, "I'll go get her right now."
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Three winged-ponies were flying with fourth pony on the purple alicorn's back. The passenger was still sobbing and saying "Thank you."
"Twi, thanks for this last flight," the passenger stated, "I-I needed this as a last Pinkie Promise." And cyan pegasus' eyes closed for last time on the purple alicorn's back.
"Goodbye, Rainbow Dash," the alicorn wispered, "Goodbye..."