The Ṣērû are a people of the great steppe plains, though they are known almost exclusively to the outsiders of Poseia as the Serim—a bastardized exonym that fails to capture the internal complexities of their society. As a people forged with "ambition and fire," they are the quintessential chariot-lords of Naplica, having mastered the breeding of the swift steppe-horse to navigate the vast distances of their territory.
Within the Ṣērû family, three distinctive peoples exist, defined largely by their proximity to water and their willingness to intermingle with foreign powers.
The Ṣērû Nārî (The River Folk)
The largest and most politically dominant branch, the Nārî are the masters of the Šutur-na river. They consider themselves the "True Ṣērû," maintaining the most archaic forms of their language and the strictest social hierarchies.
Geography & Power: They dominate the fertile heart of the steppe. Because the Šutur-na provides the only reliable transit for heavy goods, the Nārî control the flow of grain and wealth across the plains. Almost all the Great Khans who have claimed leadership over the united tribes have hailed from Nārî lineage.
Warfare: They are famous for their "heavy" chariots—formidable bronze-clad engines of war pulled by four horses, used to patrol the flat, river-fed banks and keep the lesser tribes in check.
The Ṣērû Tamḫāri (The Western Traders)
Living in the west of the steppe, the Tamḫāri are the smallest of the three groups but are currently experiencing a surge in political influence. They serve as the essential middle-men of the continent.
Culture & Trade: They frequent the city-states of the Tepir-ša river who are in tribute to them, acting as the primary conduit for trade between the wild steppe and the urban civilizations to the west. This constant contact has made them the most cosmopolitan of the Ṣērû; they are often bilingual and have adopted the city-dwellers' love for written contracts and sophisticated bureaucracy.
Political Standing: They are the second most dominant culture and currently challenge the Nārî for supremacy. Their wealth allows them to field the most advanced chariots, often reinforced with high-quality steel scavenged from the Zhuyang ruins, a luxury their eastern cousins often lack.
The Ṣērû Tiamti (The Salt-Coast Folk)
The Tiamti inhabit the southern coasts where the steppe abruptly meets the sea. Among the Ṣērû family, they are the "black sheep," often regarded as queer, insular, and fundamentally untrustworthy by their inland kin.
Isolation: Their "untrustworthy" reputation stems from their abandonment of the open plains. While the rest of the Ṣērû look toward the horizon of the grass, the Tiamti look toward the waves. They have intermingled with many who come to trade on the coast, leading to a dialect that is thick with guttural loanwords and maritime slang.
Life on the Edge: They are the only Ṣērû to have partially abandoned the chariot in favour of small, nimble coastal vessels. When they do ride, their chariots are light and built for speed along the hard-packed sands of the southern shore, used more for message-running and coastal defence than for the grand charges of the open steppe.
The Chariot Legacy
Across all three groups, the Chariot remains the primary symbol of status. To a Ṣērû, a man’s worth is measured by the speed of his team and the sturdiness of his axle. Even among the trading Tamḫāri, the most prestigious merchant-houses conduct their business from the backs of ornate, gilded chariots, proving that while their geography and neighbours change, the "fire" of their original forging remains.
Mat Seri Naming Conventions:
Male Names: Šarrum, Ilīšu, Naram, Sîn-iddin, Aššur-etel, Belīya, Zikir, Enlil-ani, Dagan-malik, Tāmûz, Iddin-Sîn.
Female Names: Amat-Sîn, Beltum, Iltani, Šerua, Ninatta, Tabniya, Lamassi, Erišti, Taram-Agade, Aya, Damkina.
Surnames / Epithets: Often patronymic (“son of / daughter of”), devotional (“servant of [god]”), or city-based. Examples include: mār Šarrim (son of the king), wardat Sîn (servant of Šarru Šipri Šamê), ša Seri (of Seri), Tamḫāri, Tiamti.
Tamḫāri: Names tend toward softer consonants and trade-linked identities, often referencing caravans, wealth, or distant cities. Double names and titles are common among merchants and envoys.
Tiamti: Names are smoother and more fluid, often invoking water, fertility, and the sea. Shorter given names are common, sometimes paired with poetic or honorific epithets.
