Based on the song 'I am Octavia' by ElieMonty and Nowacking. You can read this without hearing the song, but I strongly suggest listening to it because it's just beautiful and it'll give you a little more background for the story.
I am Octavia <--link for your convenience.
Octavia has had enough. Enough of the selfishness, enough of the hurt, and...maybe enough of Vinyl Scratch. After telling her she was going to miss her concert, again, the earth pony calls their friendship off. Now, it's up to DJ Pon3 to let her best friend go or fight tooth and hoof for their friendship. But with everything getting in her way, will she be able to make it? Or is one of them going to need a new place to call home?

Cloud Kicker might just have the wildest life of any pony in Equestria. Marvel at the insanity that is her life, and laugh at the suffering of her poor beleaguered best friend, Blossomforth. And maybe, just maybe, there's more to her than just the lovable sex maniac everypony thinks she is.

This is a semi-sequel to "The Incredibly Dense Mind of Rainbow Dash." Not really a proper sequel, since it's focused on Cloud Kicker and Blossomforth instead of Rainbow and Pinkie, but it's in the same continuity. So I guess that makes it a follow-up-side-quel story. Or something. You don't need to have read "The Incredibly Dense Mind of Rainbow Dash" to read or enjoy this, but you ought to read it anyway, just because.

TvTropes Page

The central story of the Winningverse.

We got a tag for Cloud Kicker, but Blossomforth still deserves one too.

When Celestia leaves for the Griffin Kingdoms on a diplomatic mission, Princess Luna is left in charge. However, when Celestia is captured and held by the Kingdoms' ruler King Aeris and Equestria is invaded, Luna must lead the resistance from the depths of the Everfree Forest in her first real trial since coming home.

It's been a few weeks since Luna's returned from the moon, and all is not well. She's become more introverted than ever, rarely leaving her room and obsessing over work. Celestia hopes that studying Twilight Sparkle's Friendship Reports will at least help her get out of her shell, though an unusually talkative servant may just help in that regard...and is anypony else getting strange feelings from that statue out in the gardens?

As of May 4th, now featured on Equestria Daily. *Squee*