Zeta, The Eminence in Shadow Poster for Sale by B-love

The Eminence in Shadow: Master of Garden - In terms of raw combat

Eminence in Shadow Anime's Video Highlights Delta, Epsilon, Zeta, Eta - News - Anime News Network

Zeta Leaves Shadow Garden (Cutscene)

First zeta appearance in the manga. I think. : r/TheEminenceInShadow

Zeta The Eminence in Shadow - Master of Garden 陰の実力者になり

Lord of The Dark - Zeta (The Eminence in Shadow) - Wattpad

Eta carried by Zeta by @fujiir0_213 : r/TheEminenceInShadow

zeta and eta's personality : r/TheEminenceInShadow

Kage no Jitsuryokusha ni Naritakute! (Eminence in Shadow) - Zerochan Anime Image Board

Zeta | The Eminence in Shadow | Poster