@lance blazer  
I really thought they where his sisters I mean sorry glich but still good

@marik_azemus34  
What that what I really that not say anything mean hear but this looks great and cute ok.

@lance blazer  
*I thought they were his sisters.
 
And they’re not. Jesus Christ, Lance. Stab a dictionary while you’re at it.

@lance blazer
 
They… aren’t confirmed to be anyone’s sisters. Not even each other.

@Jumpitydude  
I that they where his sisters

@Revenant Wings
 
There’s only one other image in the series, and it only has three characters: Rumble, Vinyl Scratch, and Fleur-De-Lis. So, no. Cloud Chaser and Flitter aren’t succubi.

@Jumpitydude  
Weren’t Cloudchaser and Flitter also supposed to be succubi in this series, as well?

@lance blazer  
Description from the source:
 
“Rumble’s an incubus now, and he can see into the hearts of everypony he looks upon. The aura they project tells him of their likes, dislikes, desires, passions, and more or less everything he needs to know to find them a soul mate, or show them a good time himself.
 
However, it’s common courtesy for incubi and succubi to refrain from using their powers on their loved ones, which causes Rumble concern when Flitter and Cloudchaser, his closest friends, start to display deeper affection for him than usual. The questions arise. Is this what they want? Is this what they want? Is his control over aura as good as he thought it was?”

@lance blazer  
source says that rumble, as an incubus, has powers to see a pony’s aura, and each color means something.
 
it’s a good idea, but meh without context.

Why are they glowing like that?

drags cloudchaser off you only need one, greedy pony!