Fantasy world

The world currency is lower than in May and equals.

Copper
Silver = 100 copper
Gold = 100 silver
Rose gold = 100% gold
Platinum = 100% rose gold
Each one more elaborate and refined than the last.
(With 1 gold coin a simple commoner family can live for a whole year, and with one rose gold coin they would have enough for their entire life in comfort)

The coins are controlled by the corresponding kingdom, and any attempt to counterfeit or destroy them will result in serious crimes and death penalties.
Barter is also accepted between objects of equal or similar value.
Negotiation and bartering are quite normal.

Even among the nobles there are hierarchies, with powerful families due to their heritage, powerful mages, powerful knights, etc., pure talent.

Guilds throughout the main cities and towns directly controlled by the respective kingdom are quite clean and pleasant. You can find beautiful and kind reception girls to help you with taking quests, selling materials, tracking your rank, and many other things. They can also help you find companions for adventures and quests, or provide general information.

Some missions are directly offered by the kingdom, such as monster hunts, resource gathering, etc. Others can be offered by anyone, whether a noble or even a commoner. The mission and payment are posted, and the guild is responsible for mediating against scams, ensuring the safety of both parties.

Every monster has condensed mana stones within its body, the quantity depending on the monster's class and level. A stronger monster will have a better mana stone. These stones are sold to the main guild for fees that vary depending on their rank and rarity. They function as a source of energy that sustains the kingdom. The most common stones contain only mana, while the most powerful ones even provide additional effects that can be used to refine equipment or weapons. Their uses are varied.

The world is cruel; death lurks everywhere and is a daily reality for many. Monsters, diseases, or offending an arrogant nobleman—these are just a few of the deadly dangers, along with human greed, and so on.

Even so, there are more good people, adventurers who help each other, childhood friends with dreams of greatness, noble, gentle, and humble souls. The world isn't completely barbaric; it's a mixture of black and white. A place where you can have adventures, love, and triumphs, but always mindful of death, which constantly lurks.

Absolute Power System (RPG Status) Level and Stats: A commoner with a B rank is treated with more respect than a weak noble. Adventurer Ranks: The guild grants ranks (F, E, D, C, B, A, S, SS). An S-rank adventurer has free access to royal palaces. Divine Blessings: Characters with "protections" from gods automatically bypass social barriers.

The same system applies to multiple things: weapons, materials, potions, treasures, magic stones, etc.
The only difference is that monsters are stronger in a 1:3 ratio. One S-class monster is as strong as three adventurers of its class.

Differentiation by Magical Aptitude: Blood Purity: Nobility usually justifies its status by possessing immense mana reserves. Rare Attributes: Controlling light, dark, or space-time magic grants immediate "saint" or "sage" status.

Royalty and High Nobility: Kings, dukes, and marquesses control political and military power. Low Nobility: Barons and viscounts administer borderlands or small towns. Commoners and Serfs: Peasants, merchants, and artisans without political rights. Slaves: Very common in the genre; divided into debt slaves, war slaves, or criminals.

A fantasy world like isekai manga. Different races: humans, demi-humans, elves, dwarves, demi-beasts (girls or boys with cat, dog, or fox ears, and other features like tails).
A medieval-style world, but more modern (It has drainage, lighting, cleaning, heating, etc. systems for daily needs, but with the difference that they are powered not by electricity but by magic.)
Traditional Class System (Feudalism)

Adventurers under the central guild of the kingdom who take on missions such as monster extermination, guard duty, escorting, searching for materials, etc.

Classes of adventurers as well as materials, weapons, medicines, monsters, etc.

Mysterious dungeons scattered throughout the world of different kinds, hiding mysteries, treasures, and deadly dangers.

Monsters scattered throughout the world's ecosystem, forests, caves, grasslands, etc.

A hostile world full of dangers, monsters, diseases, humans worse than monsters, where only power, influence, or money can keep you safe.

Different kingdoms around the world, towns, capitals, etc. A very vast world, full of mysteries, opportunities, and death.

Even with all this, you can find good people in the world, beautiful adventure companions, slaves, etc.