This is Cassandra, my OC don't steal. Her interests include having a dark past, saving Twilight when the elements of harmony fail, and being Celestia's long-lost sister. When Equestria needs a protector, only the brave and beautiful Cassandra will rise to the challenge, as she struggles with the delicate balance between keeping the world safe and dealing with other ponies being jealous of her. Though I can't tag this as both Slice of Life and Adventure, the stories incorporate both elements. These stories will touch you, spiritually and emotionally; they will make you laugh, make you cry, and hopefully make you love Cassandra as much as I do.
Also check out the spinoff series "The Cassandra Crossovers" here: /story/140779/the-cassandra-crossovers
Praise for The Cassandra Chronicles:
"wonderful. perfect and wonderful." -RagamuffinQ
"Too majestic for words." -Brony Hectic
"This is by far the best fiction on this site." -AwkwardTaco
"You show 'em, Cassandra!" -CartsBeforeHorses
"I love Applejack and this is still the greatest story ever told." -Twinkletail
"Your OC really is the best OC! (Other than MINE, of course...." -Twilicorn_Luver
"This is better then Fallout: Equestria." -DashieTheAlmighty
These are the various-genre adventures of my OC Cassandra, the seventh Element of Harmony
A spinoff of the smash hit fanfic "The Cassandra Chronicles." My OC Cassandra journeys to alternate dimensions, and helps them learn the magic of Friendship
My OC Cassandra returns as protector of the world, and the Mane 7's friendship. These are her adventures and day-to-day experiences.
My OC Cassandra bravely leads a health initiative to get Ponyville to eat more fruit
Gather round the fire and hear the tale, my OC saved the day where others would fail. So dashing, so brave, so hard to believe, that Cassandra singlehandedly saved Hearth's Warming Eve.
My OC Cassandra suffers the terrible affliction of being loved by too many ponies.
The Mane 6 throw a birthday party for my OC Cassandra, the Seventh Element of Harmony.