Kasikor Srae, commonly known by his adoptive name Serey Soval Rithipol Rotha Varman Sayavong or just Serey Sayavong, is a Master and Mentor of the Hidden One in Cambodia during the late Chenla and early Khmer Empires. Born as Kasikor Srae to a Chinese-Khmer family, his hands were shaped by the humid muck of rice paddies. He understood the rhythm of the floods, as he knew when the earth would give life and when it would swallow it whole. But the empire was growing, and its hunger stretched far beyond the borders of his village. As a farmer of Chinese-Khmer heritage, Kasikor's hands were stained with the mud of the rice fields, his life bound to the soil. His world was simple, predictable, and peaceful. The peace was shattered when the Order of the Ancients descended upon his village. They brought an apocalypse of slaughter, torture, and systematic ruin. Thousands and eventually millions across the region fell to their cruelty. Homes were set ablaze, throats were slit, and the land was soaked in blood. In the chaos, Kasikor watched his father perish as their home burned to ash. Orphaned and left for dead in the ruins, Kasikor had fled on foot to escape the Order, if he stays in the village, he too would have perished in the embers if not for a wandering Khmer scout. The man was a Hidden One, tracking the movements of the Order. Sensing a spark in the orphaned boy, the scout pulled him from the ruins and stripped away his peasant identity.To keep him alive, the scout buried the name Kasikor Srae deep in the mud. He gave the boy a new, lengthy name of a complex verbal shield meant to disguise his origins from the empire's spies. It was both a mask and a heavy weight to carry. As the years bled into one another, the boy grew into the blade of the Brotherhood. The soldier who fought in the shadows eventually outgrew his armor to become something greater than before. Unlike Bayek of Siwa, the foundational Mentor who was driven by raw human grief, vulnerability, and a protective Medjay instinct, Serey operated on absolute, cold perfection. Serey became the first Hidden One in history to achieve "Infallible Human" status within his Bureau. He allowed no room for error, distraction, or idle time. Driven by an intense, perfectionist discipline, he was famously harsh, strict, impatient, and controlling his apprentices. To Serey, a single wasted second or a minor miscalculation meant the death of the Creed's dream. In 802 AD, as King Jayavarman II unified Cambodia and established the Khmer Empire, the Devaraja (God-King) cult rose to prominence, equating monarchs with supreme deities like Vishnu. Serey brilliantly weaponized this religious shift. He used the cult as an ultimate form of Social Stealth, presenting himself to high society and the royal court as a heroic, god-like religious figure. By embodying the absolute, unwavering discipline of Vishnu the Preserver, he could openly operate in plain sight among palaces and stone temples of Cambodia, completely above suspicion. Serey Sayavong is a compelling archetypal figure as the disciplined Perfect Disciple turned Mentor. He evolved from a Chenla rice farmer into a lethal, unemotional operative for Jayavarman II, combining machine-like combat efficiency with absolute compassion for the vulnerable Khmer people. For generations, the rhythm of this land was dictated by the rising waters of the Mekong and the brutal, unyielding toil of the peasantry. It was a world where a broken ankle meant starvation, and the whims of local warlords decided who lived to see the next harvest. Serey did not look back at his own humble beginnings. He felt no trauma for the family lost to famine, nor did he harbor resentment for the brutal regime of training that had stripped away his emotional core. He was defined solely by constant forward momentum. The peasant boy was dead; the operative of the Bureau was eternal. Serey wastes no words and offers clear intent. This extends to his enforcement of the creed, where he acts as judge, jury, and enforcer to the Hidden Ones. In Serey's eyes and his own words, there was no malice, no anger, and absolutely no room for human error. Sayavong's legacy continues the early Rattanakosin period by the Siamese Assassin Suban; likely defending the new Thai capital from Templar-backed incursions in 1786, which likely protected the Siamese Brotherhood during the transition of power to Bangkok. Tuân Nam Điểu (The "Southern Bird") operated as a Master Assassin within the Vietnamese Brotherhood in Saigon. While the world saw a geopolitical conflict, Tuân saw the Bloodstone Unit—a specialized Templar task force—using the war as a cover to locate a Precursor site hidden beneath the Mekong Delta. Tuân’s goal wasn't just political; it was about removing the Templar "Puppet Masters" who were using the conflict to experiment on the local population as it represents the final strike against the Bloodstone Unit—a specialized Templar division embedded within military intelligence to locate Pieces of Eden in Southeast Asia.