- "Kosmos demands to know the secrets hiding in the hearts of men. So I simply cut them open."
As a member of the Eyes of Kosmos, Sotera built a network of informants from sailors and beggars. During the Peloponnesian War, Machaon of the Silver Vein provided Sotera ships to surveil the Isle of Salamis and Port of Piraeus, until she was told by her Sage, Nyx the Shadow, to call those ships home.
It was rumored among the Eyes of Kosmos that the Sage bore a grudge against Sotera, due to her "hiding something" from her. One of Sotera's fellow members sought to warn Sotera, and urged her to escape before the "the other child of the bloodline" could find her. Ironically, the letter instead helped the Spartan misthios Kassandra, the individual warned about in the letter, find Sotera and kill her, retrieving a clue to the identity of the branch's Sage.
- Assassin's Creed: Odyssey – Eyes of Kosmos: Sotera
- Assassin's Creed: Odyssey – Cult of Kosmos notes: "Letter from the Sage of the Eyes of Kosmos"
- Assassin's Creed: Odyssey – Cult of Kosmos notes: "Warning to Sotera"
- Assassin's Creed: Odyssey – The Eyes of Kosmos