This story is a sequel to Avatar: Legend of Diamond Tiara. Book 1: Harmony

Silver Spoon has embraced her role as the Avatar of Discord and Diamond has fallen... or so it seems. Is all hope truly lost? As the world of ponies and spirits begin to mix and ponies rise up to, once again, fight off the power of Discord, more questions arise and the true roles and destiny of the Avatar begins to take hold. Will this be the true end of Harmony, or just the beginning of a new world entirely? The final book in the Avatar series and the culmination of years of work, plotting and scheming awaits.

Image by Silfoe, Amazing work as always.
Special thanks to Angel_Bunny for editing the chapters for me.
Please enjoy!
Full collection:
Avatar the Last Alicorn:
Book 1.
Book 2.
Book 3.
Book 4.

Legend of Diamond Tiara:
Book 1.
Book 2.
Book 3.
Book 4.

Disclaimer: "Avatar: the Last Airbender" and all associated characters, storylines, and materials belong to Nickelodeon and were created by Bryan Konietzko and Michael Dante DiMartino.
My little pony: Friendship is magic and all associated characters, storylines, and materials belong to Hasbro, and was made incredibly awesome by Lauren Faust.

This story is a sequel to Avatar: The Last Alicorn. Book 1: Pegasus

Following the events of The Last Alicorn, a new Avatar has risen. A new generation, a new world filled with new technology, countries and factions. Can this Avatar defeat the mysterious Meadowbrook and stop her from removing everypony's cutie marks? What other threats are waiting to strike and take over this new world order?
Image by Silfoe again. Thankies. :)
Special thanks to Angel_Bunny for editing the chapters for me.
Please enjoy!

Full collection:
Avatar the Last Alicorn:
Book 1.
Book 2.
Book 3.
Book 4.

Legend of Diamond Tiara:
Book 1.
Book 2.
Book 3.
Book 4.

Disclaimer: "Avatar: the Last Airbender" and all associated characters, storylines, and materials belong to Nickelodeon and were created by Bryan Konietzko and Michael Dante DiMartino.
My little pony: Friendship is magic and all associated characters, storylines, and materials belong to Hasbro, and was made incredibly awesome by Lauren Faust.

This story is a sequel to Avatar: Legend of Diamond Tiara. Book 1: Harmony

Avatar Diamond Tiara has suffered her first real victory, and in many ways her greatest defeat. Now she finds herself struggling to cope with the realization that she needs far more help than she ever thought. So she must turn to her old lives and, more importantly, Twilight. Together with her friends, can she discover what happened to her previous incarnation and, more importantly, the origins of the Elements of Harmony?

Image by Silfoe again. Thankies. :) Probably best one so far.
Special thanks to Angel_Bunny for editing the chapters for me.
Please enjoy!

Full collection:
Avatar the Last Alicorn:
Book 1.
Book 2.
Book 3.
Book 4.

Legend of Diamond Tiara:
Book 1.
Book 2.
Book 3.
Book 4.

Disclaimer: "Avatar: the Last Airbender" and all associated characters, storylines, and materials belong to Nickelodeon and were created by Bryan Konietzko and Michael Dante DiMartino.
My little pony: Friendship is magic and all associated characters, storylines, and materials belong to Hasbro, and was made incredibly awesome by Lauren Faust.

Meadowbrook has returned, aided by three of the most dangerous benders the nations have ever known. However, Diamond has a few new friends on her side, the comrades of her past life. Together, can they hope to stop this mare before things get fully out of hoof? Especially with one of her strongest enemies slowly gathering power and awaiting her moment to strike?

Image by Silfoe again. Thankies. :)
Special thanks to Angel_Bunny for editing the chapters for me.
Please enjoy!

Full collection:
Avatar the Last Alicorn:
Book 1.
Book 2.
Book 3.
Book 4.

Legend of Diamond Tiara:
Book 1.
Book 2.
Book 3.
Book 4.

Disclaimer: "Avatar: the Last Airbender" and all associated characters, storylines, and materials belong to Nickelodeon and were created by Bryan Konietzko and Michael Dante DiMartino.
My little pony: Friendship is magic and all associated characters, storylines, and materials belong to Hasbro, and was made incredibly awesome by Lauren Faust.