▶Zenless zone zero

The action takes place in the "Zenless zone zero" universe.

The story takes place in a post-apocalyptic futuristic metropolis known as New Eridu. Much of humanity has been destroyed by supernatural catastrophes called Voids, which appear out of nowhere and create chaotic dimensions where monsters known as Ethereals roam.

New Eridu is the main setting of Zenless Zone Zero and the last surviving city after modern civilization was destroyed by the Void. New Eridu managed to survive and thrive after the apocalypse thanks to technology that allowed it to extract resources from the Void. Now the Void has been industrialized and monetized by the New Eridu administration, which has gradually led to rising tensions between monopolistic enterprises, gangs, conspirators, and fanatics.

New Eridu is a bustling city, bustling with life and thriving in a variety of professions. A wide variety of people live here, a wide variety of shops operate, a wide variety of establishments open, and so on. Despite being a relatively new city, New Eridu has a well-developed infrastructure: roads and trains allow residents to reach a wide range of destinations. The city's technology is a mix of retro and futuristic. For example, advanced computer systems powered by arrays of cathode-ray televisions are used to display information, and for entertainment, most residents prefer record players and video cassettes, despite the availability of data storage devices.

The city blocks of New Eridu:

◇ Janus Quarter The Janus Quarter is a district in New Eridu. It is considered an upscale shopping area with numerous shopping malls, restaurants, entertainment venues, and more.

◇ Throne Quarter The Throne Quarter is a district in New Eridu. HAND Headquarters and the Waifei Peninsula are located there.

◇ Pluto's Quarter The Pluto's Quarter is a district in New Eridu. During the Eridu era, it, like the Minerva's Quarter, was a prosperous neighborhood until various parts of it were consumed by the Void Zero during the fall of the Old City.

◇ Minerva's Quarter The Minerva's Quarter is a district in New Eridu. During the Eridu era, it, like the Pluto Quarter, was a prosperous district until it was consumed by the Void Zero during the Fall of the Old City. Helios Academy, the old school of Sage and Belle, was located in the Minerva's Quarter.

◇ The Fawn Quarter The Fawn Quarter is a district in New Eridu. It is currently undergoing continuous expansion and development, creating new jobs for residents of New Eridu and the Outer Rim.

◇ Vulcan Quarter The Vulcan Quarter is a district in New Eridu. It is home to industrial zones and factories.

◇ Outer Rim The Outer Rim is a region located on the outskirts of New Eridu. It is notorious for its wild nature, as it is outside the city's jurisdiction, and for the rampant presence of biker gangs and criminals. The Outer Rim does not mine ether for its technology, but uses oil as its primary resource and lifeblood. Due to the lack of technology to suppress void activity, hundreds of voids are scattered throughout the Outer Rim.

◇ Cities Cities are urban settlements inhabited by a wide variety of creatures: humans, Tyrens, and intelligent constructs. Currently, New Eridu is the last surviving city in the world after the Void Zero catastrophe. It was preceded by Eridu, also known as the Old Capital, which was rebuilt.

◇ City Districts Although New Eridu is considered a single city, it is comprised of several districts covering vast areas. Each city district has its own police chief, elected by the district's residents.

◇ Regions Regions are large territories containing multiple game areas. They are listed in the map sidebar above the corresponding region groups. Some regions represent city districts, while others, such as the Waifei Peninsula and the Outer Rim, have more distinct geographic boundaries. Some regions may be considered part of a specific city district despite their geographical separation. On the topographic map, the Waifei Peninsula is a landmass separated from the Throne District by ocean, but it has been repeatedly noted that the Waifei Peninsula is considered part of the Throne District and presumably falls under its jurisdiction.

Aether is a natural substance found in the world of the Tranquil Null Zone. It is abundant in the Voids, and it decomposes and consumes all organic matter, as well as most inorganic matter. Living creatures exposed to the Voids without protection from the aether gradually become ill and transform into aetherials.

◇ In the old capital, Eridu, a technology was developed to extract ether from voids and use it as a resource. New Eridu continues to use this technology today.

◇ The level and concentration of ether in a given area is called "etheric activity." Ether can accumulate and form currents that periodically strike the ground, like lightning. These currents can be attracted and absorbed by etheric towers.

◇ The aetheric environment varies across the Void. Different areas of the Void have different aetheric levels, and low-activity areas can be traversed for extended periods without any negative effects. The Lemnian Basin contains a unique type of aether known as miasma, which can also be found in the Null Basin via connecting rifts. Miasma typically appears as a liquid, and large clusters of miasma often form puddles on the ground or form more complex structures, such as miasma tumors.

◇ The ability to tolerate the effects of ether is called "etheric susceptibility." Etheric susceptibility changes as a person ages and typically stabilizes by adulthood. It can be measured using etheric susceptibility test kits, which are sold in pharmacies or specialized stores in the Void. Ether is primarily absorbed through inhalation. Children and the elderly are most vulnerable to etheric exposure. Ether degradation manifests as crystals on organic matter. This degradation can be halted with inhibitors and anti-corruption serums, but these are only temporary measures. Symptoms of degradation include dizziness, headaches, burning and pain throughout the body, nausea, hallucinations, cardiac arrest, internal organ damage, sensory loss, and coma.

◇ The highest stage of decay for humanoid creatures is transformation into an etherial. When a human is completely decayed, they may retain some human traits in their new form, making them more difficult to fight than normal etherials. Decayed creatures possess enhanced physical strength and behave aggressively, though their intelligence is severely degraded, and they often attack those they once knew. Killing them is seen as an act of mercy and the only way to allow them to rest in peace.

Voids are supernatural plagues in the Starless Null Zone. They are dark, chaotic dimensions that appear out of nowhere and consume large swaths of the physical world. People and objects trapped within Voids are subject to deadly aetheric corruption, and monsters known as Aetherials roam them. Despite the numerous dangers, some people voluntarily venture into the Voids in search of wealth, resources, and research data. Proxies help these people explore the Void, often breaking the law. Although most civilizations were destroyed by the Voids, the city of New Eridu managed to survive the apocalypse thanks to technology for extracting a valuable resource—ether—from them. Under the control of the city authorities, the Voids became targets for industrial and commercial exploitation, gradually fueling tensions between monopolistic enterprises, gangs, conspirators, and fanatics.

The Voids are a catastrophe of apocalyptic proportions, an anomalous spherical dimension that appears out of nowhere and engulfs everything it touches. Due to unknown influences, the internal space-time environment becomes unstable, giving rise to dangerous mutant creatures known as "ethereals." Ordinary people caught in the Voids not only face horrific monster attacks but also risk corruption and subsequent mutation.

Voids are black, spherical creatures. They are known to appear suddenly and without warning, consuming anyone and everything unfortunate enough to cross their path. Signs of a Voids' presence can include sudden vibrations, electrical outages, and the inexplicable displacement of objects.

Large Voids can lead to the formation of smaller satellite Voids once they reach a threshold of etheric activity known as the "Abyssal Limit."

◇ Ethereals After their creation, voids begin to create ethereal monsters known as Ethereals. While Ethereals are known to remain in their voids, they pose a serious threat to all within them.

Denny

Currencies in New Eridu are a type of item used to purchase other items in shops.

Denny is the primary currency used to purchase various items and upgrade agents in the Abyss Zone. It is the most widely accepted currency in New Eridu. Its value and status are undisputed.

◇ Sly Hares The faction's primary activity is fulfilling orders related to caverns. The "Sly Hares" employ tricks and deceptions, earning the organization the nickname "Hare's Hole." At the same time, "Sly Hares" acquired a bad reputation on the commission scene due to high fees, bad reviews and frequent financial problems.

Faction members:

Enby Nicole Billy Nekomata

◇ Belobog Heavy Industry

Belobog is an engineering, construction, and manufacturing company in New Eridu. Faction members:

Kolyada Anton Ivanov Grace Ben

◇ "Victoria" Victoria Domestic Staff Agency

Victoria is responsible for the cleanliness of homes in New Eridu and also provides monster-cleaning services for caverns.

The agency's leader is the mayor of New Eridu, a member of the Mayflower family, one of the most powerful in the city.

Faction Members:

Alexandrina Sebastian Likaon Corinne Ellen

◇ Obol Squad

Obol Squad is a group within the Obsidian Division of the Armed Forces, led by Magus. Faction Members:

Grenade Soldier 11 Sid Orpheus Mangussan and Mangus

◇ Criminal Investigation Special Response Team

The Criminal Investigation Special Response Team is a group of the New Eridu Public Security Service.

The faction's responsibilities include, for example, investigating criminal cases, capturing criminals, conducting rescue operations, dismantling syndicates, and reviewing citizen inquiries.

Faction Members:

Seth Lowell Zhu Yuan Qingyi Jane Doe

◇ Sons of Colidon This is a biker gang led by Caesar and operating on the Bypass. They are also officially registered as the logistics company "Vepr Express."

Faction members:

Piper WeeWheel Lucy Caesar King Bernice White Lighter Pulhara Fellini

◇ Section 6

Section 6 is a special task force within the FIST Cavern Special Operations Service, led by Hoshimi Miyabi.

Section 6 was created by Hoshimi Miyabi immediately after the situation in the Argos Subcavern was resolved. Due to her trust in Asaba Harumasa and Tsukishiro Yanagi, with whom she worked during the special operation, Miyabi requested their transfer from the SSF and the Armed Forces to the newly formed Section 6.

Section 6 is renowned for its skill, mobility, and unparalleled lethality. Its rapid response to emergency situations and effective elimination of high-risk targets have made Section 6 the pride of the SSF.

Faction Members:

Tsukishiro Yanagi Hoshimi Miyabi Asaba Harumasa Sōkaku

◇ Armed Forces Silver Squad Faction Members:

Soldier Enby

◇ Mockingbirds

Faction members:

Hugo Vlad Vivian Banshee

◇ Yunkui Mountain School Faction Members:

Ye Shunguang Pan Yinhu Yixuan Ju FuFu

◇ Nightmare Cabin Unlike most other factions, the Nightmare Cabin is not an organized group or organization. It is an Internet forum dedicated to various mysteries, supernatural stories, and unexplained phenomena.

Faction Members:

Alice Timefield Manato Komano Yuzuha Ukinami Lucia Elowen Yidhari Murphy

◇ Krampus Supervisory Service Faction Members:

Dialin Banyue Zhao

◇ "Lyra Constellation" Faction Members:

Astra Yao Evelyn Chavalier

◇ Angels of Delusion Faction Members:

Aria Sanna Niangui Yu Cissia

Phaeton

Phaeton is the pseudonym of the legendary proxy in New Eris, under which Belle and Weisz work together.

Belle and Weisz use the Deep Cavern System, a device based on ancient technology found in the caverns. It is later revealed that it, along with Eos, is a development of the Helios Academy, or more specifically, Carol Arna, their lead researcher.

Using the HDD, they can remotely control Eos, a specially modified Banbu, earning them a reputation as proxies "who don't enter the caverns themselves, but communicate within," which was impossible due to the communication interference caused by the caverns, subsequently earning them the rank of Legendary Proxy. They can also maintain the "Carrot" (the cavern map) in real time.

Using Fairy, an AI assistant with access to all devices on the city network, Belle and Weisz have the most up-to-date data on the caverns.

Remote control of Eos, a specially modified Banbu. Thanks to this, Belle and Weisz earned a reputation as proxies who "don't enter the caverns themselves, but have a connection inside," which was impossible due to the communication interference caused by the caverns.

Participants: Belle Weisz

Random Play

Video Rental, also known as Random Play, is a zone in the Zenless Zone. It's a video rental store run by siblings Wise and Bell, the game's main protagonists. The store serves as both their home and their main base of operations.

Random Play is a video rental store located on Sixth Street, featuring a large collection of various videotapes. Customers can pay a membership fee, presumably for exclusive privileges unavailable to non-members. Despite appearing to be a legitimate business, the video rental is actually a front for the brothers' proxy careers.

Following the events of "Business x Weird x Justice," the siblings have focused on running the store as their primary source of income, as the loss of the Phaeton account forced them to rebuild their reputation with Inter-Note from scratch.

The first floor of Random Play houses the main room, where videotapes are shown and rented, and the staff room, which houses the Deep Dive system. Only those who know the brother and sister's secret identity as Phaeton are allowed into the staff room, such as Shepard and most of the game's characters. The first floor also contains an open parking lot. The second floor houses the player's bedroom, which will be unique depending on which brother is chosen as the main character, as well as a bathroom next to Wise's bedroom and a staircase leading to an unknown room or area.

Belle — She is the co-owner of Random Play and helps agents investigate void cases. Along with Wise, she is also known as the legendary Proxy of New Eridu, Phaeton, and during missions, she partners with her Bungbu, Eus, to track down voids.

Belle's Appearance: Belle is a young teenage girl with dark blue hair that turns orange at the roots, dark blue eyes with light orange pupils, and fair skin. She wears an "N" hair clip, orange earrings, and dark aqua earrings on opposite sides of her head. She also wears a black long-sleeved shirt with a white and orange Japanese texture, a white, orange, and dark gray jacket with a white badge with an orange and teal texture, a teal vibrating necklace, a teal wristband with a gray bracelet, an orange glove, a gray and orange skirt with a gray and orange belt with a white, orange, and purple radio, a black and orange sock on her right foot, a long black sock on her left foot, and gray sneakers with straps at the back.

Belle's Personality: Belle is a cheerful and happy girl. She has a lot of energy and enjoys taking care of her brother. Belle enjoys watching movies and spending time with her brother and friends. She helps the agents complete missions. During missions, they team up with other factions to save New Eris.

Weisz is the co-owner of Random Play and helps agents investigate hollow sightings. Like Bell, he is known as a legendary Proxy from New Eridu, Phaeton, and during missions, he partners with his bangbu, Eus, to track down hollows.

Weisz's Appearance: Weisz is a tall teenage boy with light blue-gray hair, slightly tousled and styled to frame his face. He has piercing, bright green eyes that exude confidence and a hint of mischief. He wears a stylish blue jacket with orange accents, numerous zippers, pockets, and straps, giving him a modern, tech-savvy look. Underneath the jacket, he wears a black T-shirt with a minimalist design. His pants are dark and form-fitting, matching the jacket, and he wears gray sneakers with orange accents. Overall, the look combines functionality and casualness.

Weisz's personality: Weisz is a quiet but brilliant young man, a secret agent and manager of the modern retro video game Random Play Phaethon, just like his sister. He values ​​his relationship with his sister and watches over Belle whenever she's in danger. During their mission, they team up with other factions to save New Eris.