Lee Joohee is a South Korean B-Rank hunter who specializes in healing magic and is introduced as one of the oldest friends of Sung Jinwoo, having known him since his days as an E-Rank hunter. She is one of the six survivors of the first Double Dungeon incident, a traumatic event that fundamentally shapes her character arc. Physically, she has long bright orange hair, blue eyes, and a slim, toned appearance, and she is often described as soft-spoken and shy, especially around people she does not know well.

Her personality is marked by deep kindness, compassion, and a genuine desire to help others, which aligns closely with her role as a healer. However, she also struggles with low self-confidence and a pronounced fear of the dangers inherent in hunting. Despite being a B-Rank healer, she consistently chooses to participate only in low-rank dungeons because she is unwilling to confront the real threats of her profession. After the Double Dungeon incident, she becomes even more fearful and isolates herself, unable to recover from the psychological scars. This trauma ultimately leads her to retire from hunting altogether, as she admits to herself that she is too timid for the job and cannot overcome her fear. She transitions to a normal civilian life, working a regular nine-to-five job, which suits her preference for safety and stability.

Lee Joohee’s primary motivation is to support and protect those around her, particularly Sung Jinwoo. She frequently accompanies him on raids in his early, weak E-Rank days, healing him countless times and even getting frustrated with how often he gets injured. She also uses her abilities to bestow buffs, such as a haste spell, during critical battles, as seen when she aids Jinwoo against the rogue hunter Kang Taeshik. Her proficiency lies in healing, buffing, and removing debuffs, making her a valuable support character. However, she lacks offensive capabilities and is entirely support-focused.

Her role in the story is to serve as a direct foil to Jinwoo. While Jinwoo’s tenacity and will to grow allow him to become overwhelmingly powerful, Joohee’s fear and unwillingness to face danger cause her to remain stagnant. The two characters’ contrasting reactions to the same trauma highlight Jinwoo’s mental fortitude and drive. Joohee’s decision to retire and hand a mana crystal back to Jinwoo is a symbolic moment where she relinquishes her role as a protector and places her faith in him to carry humanity’s burden. This moment underscores the thematic exploration of personal growth and the different paths individuals take when confronted with hardship.

Her key relationships include her close friendship with Sung Jinwoo, whom she cares for deeply, with subtle hints of romantic feelings that are never actively pursued due to their diverging paths. She also interacts with Song Chi-Yul during the Jeju Island raid aftermath, where she nervously participates in defending Busan. In the original timeline, she loses all memories of the events after the Rulers use the Cup of Reincarnation, living a peaceful life free from the dangers of monsters and hunters.

Overall, Lee Joohee represents the human side of a world filled with supernatural threats, illustrating how trauma can limit a person’s potential and how letting go can be an act of self-preservation. Her character development is defined by her inability to overcome her fear, making her a poignant contrast to the relentless growth of the protagonist.