Liyen is the mortal heir to the kingdom of Tianxia. Raised by her grandfather after the loss of her parents, she struggles with a weak constitution and a streak of white hair, anomalies she cannot explain due to her repressed memories. As a leader, she prioritizes the well-being of her people over blind obedience to the immortals who demand her kingdom's servitude. She seeks to earn her position rather than simply inherit it, relying on empathy and diplomacy.

Lord Zhangwei is the formidable, immortal God of War, serving Queen Caihong of the Golden Desert. Feared by mortals and immortals alike for his ruthless reputation, he hides a quiet vulnerability beneath his hardened exterior. He suffers from a magical injury sustained during a past conflict, driving his urgent need to secure the enchanted Divine Pearl Lotus.

Queen Caihong is the immortal ruler of the Golden Desert. She governs with absolute authority, demanding unquestioning loyalty and obedience from her mortal subjects in Tianxia. Her strict rule is shaped by past conflicts, leading her to prioritize order and control over compassion. She expects Liyen to continue the mortal tradition of servitude.

Aunt Shou is a devoted guardian and trusted adviser to Liyen, having helped raise the young heir. She is a maternal figure who offers comfort and guidance during times of crisis. She harbors a strong distrust of immortals, constantly warning Liyen about their cruelty and indifference toward mortals.

Lord Dalian is the ruler of the Wuxin, humanoid beings banished to the Netherworld after a historic war. He governs his people with a cruel and merciless grip, rationing their resources to maintain absolute control. Driven by deep-seated insecurities and a desire for conquest, he seeks to break the barrier separating the Netherworld from the mortal world.

Chengyin is Aunt Shou’s adopted son and Liyen’s closest friend. He serves as Liyen’s First Adviser, offering her steadfast support and managing the kingdom's affairs when she is away. He is a loyal adviser who fiercely protects Liyen, often acting as a grounding presence in her turbulent life.

Lord Zhao Likang is the mortal Lord of Tianxia and Liyen’s beloved grandfather. He is a selfless and devoted leader who places the survival of his granddaughter above his political obligations to the immortals. His sudden passing leaves Liyen to ascend the throne and manage the dangerous politics of their world alone.

Captain Rao is a ruthless and bloodthirsty general in the Wuxin army. He faithfully executes Lord Dalian's violent orders and is eager to invade the mortal world, viewing violence as the primary solution to his people's struggles.

Miss Lin is a general in the Wuxin army who stands in sharp contrast to her more violent peers. She prefers diplomacy over bloodshed, suggesting alternative methods to save her people rather than resorting to an all-out invasion of the mortal world.

The Ancient Grandmaster is one of the oldest and wisest immortals, residing in the Kunlun Mountains. He acts as the guardian of the Tree of Everlasting Life and tests the character of those who seek his aid. He provides cryptic but vital guidance to travelers.

Mingwen is a servant in the Wuxin palace who exhibits unexpected kindness. She risks punishment to heal Liyen's wounds, challenging Liyen's preconceived notions that all Wuxin are naturally cruel and bloodthirsty.

Minister Guo is an ambitious courtier in Tianxia who frequently pushes Liyen to marry. He constantly suggests suitors who are connected to his own political interests, revealing his eagerness to seize influence over the throne.

Mei is a Wuxin servant who attends to Liyen. Like Miss Lin, she harbors secret doubts about Lord Dalian's aggressive leadership and prefers to avoid unnecessary conflict whenever possible.