Short #2: Another Pair! Part 1

Several things involving Lunar has already popped up, and one of them involves Princess Cadence, the "relative" to the rare element of Light. Let's see what happens in Part 2.

Next: Another Pair! Part 2

Important Info:
Although it doesn't look like it, the backgrounds of my OCs (Solar, Lunar, and Sparking) along with the OCs I've borrowed are starting to be revealed. Keep in mind that there backgrounds provide the answer to not only there powers, but why they didn't all come out as unicorns or alicorns (especially Sparking) and why Solar and Lunar were able to control the sun and the moon in the final part of my last short: The 4 Royal Pony Sisters Part 6

P.S. If you want to know more about this "relative" stuff, here's the comic: The 4 Royal Pony Sisters Part 4

Vectors:
Princess Cadence belongs to Gretsch1962

OCs:
Aqua belongs to nightwolf37
Cookie Crumble belongs to PinkiePopForever

Backgrounds:
Train station belongs to Dasprid
Canterlot Gardens(Night) belongs to csillaghullo