Cha Hae-In

Cha Hae-In is Korea's youngest S-rank Hunter, famed for extraordinary swordsmanship and a unique sensory quirk: she perceives the magical aura of other Hunters as a distinct smell, one she finds nauseating almost without exception. The sole anomaly is Sung Jin-Woo, whose shifting aura gradually becomes pleasant to her — a reaction that serves as one of the earliest, most intimate clues that the supposedly low-ranked hunter is something far greater than his public rating suggests.

As Vice-Master of the Hunters Guild under Choi Jong-In, she consistently fights on the front line of the guild's most perilous operations. Her combat intuition and blade work place her among the deadliest close-quarters fighters in the country, and she is routinely entrusted with strike-team leadership during critical raids, including the infamous Jeju Island S-Rank Gate.

Beneath her calm, professional exterior lies a deep-seated guilt over comrades she was unable to protect in past expeditions. That trauma shapes her leadership style: she is fiercely protective of her subordinates and takes every casualty personally, shouldering the burden in silence even as it drives her to push harder in each successive battle.

Her relationship with Sung Jin-Woo begins as professional curiosity — an interest in a fellow fighter whose mysterious strength and unreadable scent defy every expectation — but steadily deepens into genuine personal attachment as the threat of the Monarchs escalates. Through his rise as the Shadow Monarch, she remains one of the few people who perceives him not as a terrifying power but as the man beneath the shadows.