Board Thread:General Discussion/@comment-24673185-20140312084312/@comment-1746153-20140312094144

Seelentau wrote: Just like Kiba, Kihsimoto decided to canonify Raiga. It's more than obvious. However, the filler arc stays anime-only.

It's still a cameo though. Kishimoto could change his name for all we know. Kiba were known as "Lightning Fangs" before, weren't they?