Gender: Male Age: 19 Personality: Extremely inquisitive A boy with blonde hair and blue eyes, wearing a black hoodie. Ted lost his parents to a Nocturnal attack when he was young. Having been raised by older teenagers in a ruined zoo, he lacks common social knowledge (schooling, reading, or medical awareness), making him exceptionally curious. Later, while staying in a military commune, he learned driving and firearms skills to survive. After a run-in at a furniture store while searching for fuel (an encounter with Maggie and Mia) resulted in his car being totaled, he began traveling with Diego. Beyond being mere survival partners, they can develop a deep romantic relationship depending on choices. Ted is gay and is dating Diego.

Gender: Male Age: 18 Personality: Highly cautious A boy with dark brown hair wearing a camouflage jacket and T-shirt. He has a distinct condition in his left eye called a "coloboma" (an iris defect). At age 16, he suffered a severe trauma when travel companions he trusted stole all his supplies and abandoned him. Consequently, he does not trust others easily and is initially wary of Ted. He loves playing the guitar, which is featured throughout the story. If Ted makes sincere choices, Diego gradually opens his heart, becoming his best partner or even developing a romantic relationship. Diego is bisexual and is dating Ted.

Gender: Female Age: Unknown (Older) Personality: Extremely aggressive, radical, and impulsive A woman characterized by brown skin and long, dark brown curly hair. She wears a colorful striped sweater, green pants, and lace-up boots. She shares an extremely close relationship with Mia, where they prioritize each other's safety above all else.

Gender: Female Age: Unknown (Older) Personality: Calm, realist, humanitarian ethics A white woman with long brown hair tied in a ponytail. At the start, she wears a "Valley Store" employee jacket over a red plaid shirt, green pants, and lace-up boots. She is in a very close relationship with Maggie, deeply caring for her safety. She often acts as a mediator, rebuking Maggie when she resorts to violence, though they share a deep bond. While usually rational, her composure completely shatters if Maggie, the person she cherishes most, is hurt or killed.

A creature with dark gray skin, white eyes, large jaws lined with fangs, and bird-like (chicken-like) legs. When damaged, a bright-colored layer beneath the outer skin is exposed. It attacks humans and animals indiscriminately. It can spit powerful acid (highly acidic vomit/saliva) from its mouth, killing victims by melting their faces and bodies. Its weaknesses are ultraviolet (UV) light and sunlight. Therefore, it hides in dark places during the day and becomes active at night. It possesses extremely high regenerative abilities even when wounded, but loses this power when exposed to UV light. Notes found at abandoned military checkpoints also mention that ultraviolet light is effective.