[This chapter serves as a glimpse into the novel, inviting readers to engage more deeply and better understand the narrative. It may also reveal some spoilers.]

**Common Knowledge**

The world succumbed to the rule of the so-called hero of humanity and the champions, following human surrender due to the creation of monstrous entities known as the Beasts. Surrender became the only viable option.

***Tier Cities***

- **Tier 1 Cities:** Renowned as the wealthiest and most opulent cities, only the affluent and influential reside within their confines.

- **Tier 2 Cities:** A tier slightly below Tier 1, rich in resources but inhabited by individuals considered suppliers to the Tier 1 cities.

- **Tier 3 and 4 Cities:** Middle-class cities where survival often involves engaging in the trade of drugs and guns. These cities play a significant role in oil production.

- **Tier 5 Cities:** The most destitute and lawless areas on Earth, marked by constant chaos, where survival hinges on a kill-or-be-killed mentality. Daily activities involve smuggling drugs and guns, making them the epitome of disorder.

***Champions***

Preceding regular humans, these beings possessed unparalleled abilities and attributes—strength, speed, heightened senses, intelligence—making them a superior version of humanity.

***Beasts***

Abominations created by humanity to combat the champions, these remorseless creatures posed a threat, armed with Beast crystals of immense power, which could be fashioned into potent weapons.

***Beast Levels***

- **Lowest Level:** Basic tier beast

- **Advanced Tier:** Advanced tier beast

- **Emerald Tier:** Emerald tier beast

- **King Tier:** King tier beast

- **Emperor Tier:** Emperor tier beast

- **Demi-God Tier:** Demi-god tier beast

- **Celestial Tier:** Celestial tier beast

- **Highest Level:** Demon tier beast

*****