I call shenanigans! There is only one blue oni, but the red-oni count is two! (Three, if you count Yuugi herself cuz of her horn!)

Oh god, this is Ragathol, isn't it?

On investigation, it turns out that Spidu indeed claims to be the same person as Ragathol. Since their styles are obviously similar and Ragathol is most likely too obscure to attract forgers, I'll update the artist tag. Thanks for the spotting.

Awesome pic!