Diamond Tiara is on top of the world, and she knows it.

She has a mother who loves her, a father who literally went to the ends of Equestria to make her happy, a best friend who will always be by her side, the adoration of everypony around her, and more money than she could ever spend.

Yet she also knows how easily all of that could fall away. So she goes through every day making sure to keep her world together.

Changelings have plagued Equestria for thousands of years, horrific bug-like beings who take the place of your loved ones and feed off the love you give them. Until the wedding of Princess Mi Amore Cadenza and Prince Shinning Armor, where their queen was finally defeated, and all changelings expelled from Equestria once and for all.

As the wedding takes place in Canterlot, ponies from Manehatten to Trottingham flock to the streets to celebrate the defeat of Queen Chrysalis.

No one mourns the lives lost.

Most ponies of Equestria let this particular day go by without so much as a second glance. Some historians or mages acknowledged its existence, but only in the context that the world lost a great spell caster, and with him much untapped knowledge. Nopony saw it as a day worth commemorating, worth remembering as more than a trivia question.

Yet, for Princess Celestia of Equestria, it was the day she’d lost her best friend. So she takes the time to reflect on their friendship.