Characters Profile

Here are the character profiles for the characters introduced so far:

_Sijun (Main Character)_

- Age: 25

- Occupation: Transmigrated reader, student (formerly)

- Personality: Resourceful, determined, compassionate

- Skills: Knowledge of the novel's storyline, strategic thinking

- Equipment: Basic combat gear, backpack with supplies

- Backstory: Was a reader who transmigrated into his favorite novel, "Eternal Rebirth," where he became a side character; now navigating the world with his knowledge of the story

- Goals: Survive, change the course of events to prevent tragedies, help Joon Woo

_Joon Woo (Mammoth, Protagonist of "Rebirth")_

- Age: 29

- Occupation: Mercenary, bodyguard, regressor

- Personality: Brooding, stoic, fiercely loyal

- Skills: Expert swordsmanship, enhanced strength and agility, regression abilities

- Equipment: Custom-made sword, combat armor

- Backstory: Protagonist of the novel "Eternal Rebirth," has regressed multiple times to try and change the course of events; lost his humanity in one of his regressions

- Goals: Protect his allies, prevent the downfall of humanity, find a way to break the cycle of regression

_Dr. Kim_

- Age: Late 40s

- Occupation: Scientist, researcher

- Personality: Intelligent, compassionate, driven

- Skills: Expertise in biology, chemistry, and technology

- Equipment: Lab coat, research equipment

- Backstory: Lost his family in the outbreak, dedicated to finding a cure

- Goals: Develop a cure for the virus, restore humanity

_Scar_

- Age: Early 20s

- Occupation: Leader of a rival faction

- Personality: Ambitious, cunning, charismatic

- Skills: Strategic thinking, leadership, hand-to-hand combat

- Equipment: Custom-made pistol, combat gear

- Backstory: Rose to power in the aftermath of the outbreak

- Goals: Unite the factions, control the remaining resources

_Lila (Ghost of the Dead Zone)_

- Age: 22

- Occupation: Sniper, scavenger

- Personality: Quiet, confident, resourceful

- Skills: Expert marksmanship, stealth, survival skills

- Equipment: Custom-made sniper rifle, goggles, combat gear

- Backstory: Grew up in the Dead Zone, learned to survive on her own

- Goals: Survival, uncovering the truth about the world's downfall

With this setup, Sijun's knowledge of the novel's storyline creates an interesting dynamic, as he navigates the world and tries to change the course of events. Joon Woo's regression abilities and experiences as the protagonist of the novel add depth to his character. Let me if there are any questions or requests.