This story is a sequel to Screwball Mio Amoré

Several months ago, a strange little propeller beanie dropped out of the sky and landed in an abandoned field outside Ponyville. The ponies went about their lives, blissfully unaware of what lurked underneath, until today...

Journals. Everyone keeps one, even if they call it by a different name. An autobiography, some online blog, or even fading memories in the mind regaled as tales to grandchildren, it's always recorded somewhere for someone to see or hear one day. And whether or not it's truth or fiction, it's always unique in delivering an individual perspective on life.

Celestia politely asked Sunny, her mirror pool duplicate, to write about her life experiences in one such journal.

Unfortunately for her, Sunny wasn't very good at following directions.

This is a side story to Letters from an Irritated Princess.

While knowledge of the whole series is not required, it is highly recommended that one has read the events beyond the Slice of Life Letter to have a better understanding of the circumstances. Otherwise, reading this might be confusing.

Correction: It will absolutely be confusing. Also made a small title change that should, in theory, be simpler.

MLP/Undertale crossover.
Not a PWNY-verse story.

Long ago, the Monsters and Humans fought a great war. The Monsters lost, and were sealed in the Underground. It would take the power of seven human souls to break the barrier that kept them imprisoned. They only had six. And so the Monsters waited and hoped, praying that another human would find their way to the Underground. Some thought the seventh soul would give their King the strength to break the barrier. Some dreamed of a human who would be their friend, and save them all...or had nightmares of one who would bring back the war.

...but nobody came.

...but somepony did.

Eons after the war, with no way to tell how much time had passed above, a tiny blue filly with wings and horn fell into the underground, calling for her Mama. None knew the poor creature's nature or origins...but her soul was powerful with magic, even more so than a human soul.

None can know what will come...of this little 'Woona'.

Cover art by Sanyo21

In a remote corner of the Solana Galaxy lies a backwater planet called Veldin. Nothing important ever happens there. Nothing exciting, either. Ratchet, a Lombax with no idea of his origins, is beginning to grow bored with his life, and dreams of excitement. He wishes on a falling star for some excitement to find its way into his life.

The falling star answers by crashing into his home in the form of a basket carrying a tiny creature with a horn, a pair of wings, and four hooves. The name on the basket reads "Twilight Sparkle".
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Part of the PWNY-verse.

Edit: Now with cover art by the amazing G_Haze
Video Consultant/Technician: m2pt5 (he provides the infobot videos and similar.)

Edit: Game Timeline
Ratchet and Clank: Done
Going Commando: Done
Up Your Arsenal: Done
Deadlocked: Done.
Size Matters: Done.
Tools of Destruction: Done.
Quest for Booty: Done.
Crack in Time: Done.
All 4 One: Done.
Into the Nexus: Done.

Twilight was supposed to gather the Elements of Harmony the way Princess Celestia planned it: meet the embodiments of the Elements while running errands in Ponyville, team up with them, discover the meaning of friendship, and then defeat Nightmare Moon. It was all so simple.

Too bad she really underestimated Twilight's ability to screw things up.

Additional Character Tags: Octavia, Nightmare Moon, Princess Celestia, Shining Armor, Princess Cadance

Edited by WorkbenchManiac: chapter 7-25, 27 onwards
Edited by docontra: chapter 26 onwards