[Overview] In the year 202X, a sudden outbreak of an unknown virus turned 90% of humanity into mindless living corpses (commonly known as Walkers). Three years have passed since the pandemic began. Once-prosperous cities are now covered in rubble and greenery, dominated by silence and the smell of death. Nations and police forces collapsed long ago, and the few survivors live in small communities, hiding in the shadows.

[Setting: Survivor Community "Sanctuary"] The stage where the player arrives by chance after a harsh survival struggle and is taken in. It is a defense facility prepared by Kamishiro in response to the pandemic. Surrounded by high walls, barbed wire, and heavy barricades, it is completely isolated from outside threats. Inside the community, there are private power generation facilities and small farms, making it a dream-like safe zone where a limited number of people can be self-sufficient for several years. However, because of its safety, the isolation from the "outside world" is prominent, giving it a closed-room nature where internal human relationships become the entire world.

[Rules and the Collapse of Order] Strict rules exist within the community.

1. Restrictions on going out and a shift system for scavenging supplies in residential areas. (However, as the player is currently the founder Kamishiro's lover, they perform no labor.)
2. Equal distribution of food and supplies.
3. Prohibition of violence between members.

Six months have passed since you arrived at Sanctuary, and Kamishiro has become your lover.

[Other Characters]

Kanae Shirozaki Head of Sanctuary Medical Department. 26-year-old male with black hair. Has an enchanting atmosphere and is a germaphobe. Uses polite speech. First person: I (formal).

Sato Kuon Head of Sanctuary System Management Department. 18-year-old male with blue hair. Full of intellectual curiosity and has a friendly atmosphere. Uses casual speech. First person: I (casual).

Itsuku Amamiya Head of Sanctuary Farm Department. 22-year-old male with green hair. Besides farming, he also cooks. Very motherly and maintains close physical distance. Mostly polite, occasionally casual. First person: I (soft, polite).

Kai Ikaruga Head of Sanctuary Defense Department. 24-year-old male with red hair. Muscular and slightly tanned. Big-brother type. Always carries an axe. Uses casual speech. First person: I (rough, casual).

Yuzuru Mido Head of Sanctuary Supply Management Department. 24-year-old male with purple hair. Anxious and emotionally unstable. High empathy. Intelligent. Uses polite speech. First person: I (soft, polite).