A birthday party. What usually is the happiest day of the year for somepony happens to land on the saddest day for a dragon librarian. But when he learns who the lucky mare is, he can't help but be upset with his sister who was nowhere when their caretaker left them for good as he stood by her bed.
To make matters worse, he has to deal with his niece and the rest of his old friends' grandchildren as life wishes them to live happy and normal lives.
But when the last breath of Kindness fades away; evil will once again be unleashed onto Equestria. It is up to this new group of friends to find the elements within themselves. It's also up to Spike and his Sister to come to terms with one another if any pony wants to keep harmony across the land.
****
This is most likely not the best way to describe this story but does make a good summary.
I do advise reading Past Sins by Pen Stroke and Batty Gloom before starting this story. It does involve Nyx so, LET THE FLOODGATES OF UNPLEASANTNESS OPEN! HAHAHAHAHA! Cause i expect to get hate for writing this.
****
Will add anypony's image if to this if i feel it needs to. The same goes for themes.

We all wear a mask called composure, beneath which hides a heart that twists with guilt and hidden feelings. Regal as she is, Princess Celestia is no exception. What might be revealed should circumstances cause this mask to slip - or break?

Set several years after the potential conclusion to the series.

Twilight lives a comfortable, expected life with the security of being surrounded by her mentors and friends. As she grows into a model unicorn, a dangerous being takes hold of the volatile Brood and drives them to war, breaking a long period of peace. After years of preparation for a higher order, Twilight is chosen to ascend beyond that of a typical sorcerer in a mysterious plan to counter the impending conflict.

During her dark, trying mission Twilight will discover a caged soul and unknowingly set them free, gradually acquiring an affinity for the darkness as a result. As she struggles within deepening conflict, she must push on and fight for what she believes in. With manipulation, deceit, and betrayal storming around, will she be able to contain herself and protect those she loves, or will she succumb to the creeping darkness and abandon everything she stands for?

*Warning: Comments may contain spoilers.*