User blog comment:Jopjopjop/Volume 18 Spoilers/@comment-16281343-20141009170233/@comment-16281343-20141021170653

Devil's wings are different from A/FA wings.

A/FA wings signify rank not power. Irina's case is an example of that and that's why I wouldn't be surprised if Sahariel has multiple wings too even if he doesn't seem to be a person with power.

Devil's wings, imo, are dependent on the bloodline, and it's exclusive to the Lucifers. That's why Rizevim and Vali have multiple wings while the other Maous, even though powerful, only have one pair.