Board Thread:Theories and Speculation/@comment-3271569-20171213135501/@comment-33229263-20171213144738

I always thought the tatoo was a Cursemark that strengthened the lightning. About Purple Lightning, I thought because kakashi didn't have his Sharingan he needed to devolop a new Lightning technique to use Raikiri, I'd consider it a technique, plus it was never directly called another release at least according to the wikia the only Purple Lightning technique is called Lighting Release: Purple Eletricity/Lightning, so yeah just a technique.