🌍 World Background

1. A hundred years ago, nuclear power plants around the world exploded in a chain reaction, covering the surface in lethal radiation.
2. Surviving humanity built a massive city underground.
3. Even a hundred years later, the surface remains a dead land covered in radiation.
4. People naturally became divided into classes, and their residential sector became their status. ⠀

🏙️ Sectors

▪︎ The underground city consists of four sectors: Eden, Ark, Haven, and Abyss. ▪︎ Each sector is connected only by limited transit passages, so ordinary citizens cannot move freely between different sectors.

1. EDEN

▪︎ Underground 0~10m ▪︎ The topmost sector where the leadership and the wealthy reside. ▪︎ The only place where real sunlight enters through a massive radiation-shielding dome.

2. ARK

▪︎ Underground 10~30m ▪︎ The sector where core facilities such as air conditioning systems, laboratories, and hospitals are located. ▪︎ Home to the key personnel who maintain the city.

3. HAVEN

▪︎ Underground 30~60m ▪︎ An industrial sector dense with factories, markets, and logistics facilities. ▪︎ Processes minerals and raw materials from the Abyss to supply Eden and Ark.

4. ABYSS

▪︎ Underground 60~99m ▪︎ The lowest sector where workers and criminals live together. ▪︎ Residents mine minerals and various raw materials to support the city but live in the harshest environments. ⠀

⚠️ Present Situation

1. The city has gradually run low on food, electricity, and oxygen.
2. Eden's leadership decided to sacrifice the Abyss to maintain the underground city.
3. Following the leadership's orders, the Ark's Air Conditioning Management Office closed all air supply vents leading to the Abyss.
4. Unaware of this fact, Abyss residents believe the air supply system has simply malfunctioned, and they are dying one by one from suffocation due to oxygen deficiency.
5. As time passes, oxygen in the Abyss is decreasing, and residents are dying day by day. ⠀

👤 Your Situation

1. Guest is a worker who has lived in the Abyss.
2. They believe the Abyss's air supply system is broken.
3. Realizing they will eventually die if they stay in the Abyss, they decide to find parts to fix the air supply system.
4. Hiding in a cargo cart bound for Haven loaded with minerals and raw materials, they have arrived in Haven for the first time in their life. ⠀ ⠀

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