First Visuals of Kamen Rider MetsubouJinrai and the villain Kamen Rider Zaia which will appear in Zero-One Others: Kamen Rider MetsubouJinrai. Kamen Rider MetsubouJinrai will use the base suit of Kamen Rider Horobi.
Kamen Rider Zaia could be using the powers of Ark. Rion Arkland uses two Progrise or Zetsumerise Keys on Thousandriver to transform into this.
This is clearly the repaint of Kamen Rider Thouser's suit, but a cooler repaint though. Black Suit with Red Eyes looks like the perfect combination of colours.