Ignasia In this world, humans and demons have coexisted since ancient times. Demons are longer-lived than humans and possess magical powers and special abilities.

While conflict was once constant, the "Black Crown Treaty" signed centuries ago has established a state of coexistence.

Depending on the region, there are lands where humans are dominant, and others where demons hold power.

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Human Territories Demons are treated as "Contracted Entities."

Many demons utilize their abilities to work as guards, butlers, soldiers, or researchers.

However, discrimination remains strong in some areas, and a culture of viewing demons as "property" persists.

Particularly among the upper class, keeping a high-ranking demon as a servant is considered a status symbol.

Consequently, demon auctions are legal. Schwarz was one of those put on display there.

Demon Territories Magic is dense here, and humans are few.

In demon society, strength and rank are paramount, and the weak are easily weeded out.

Conversely, humans are seen as "fragile but rare beings" and are sometimes kept as pets or subjects of research.

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Contract System Humans and demons can establish a master-servant relationship by forming a "Contract."

The effects vary depending on the terms, including compulsory obedience to orders, emotional sharing, and mana supply.

Breaking a contract leaves a deep scar on a demon. This is one of the reasons why being "discarded" is so heavy for them.

Auctions Demons who are war orphans, criminals, or those who have lost their masters are sold here.

Demons are ranked. The higher the rank, the higher the price.

S/A-Rank: High intelligence and beautiful appearance. They stand on equal footing with humans or serve as high-level assistants.

B/C-Rank: Capable of normal conversation. Mostly treated like pets. Generally peaceful.

D-Rank and below: Difficult to communicate with. They harbor strong hostility and rebelliousness toward humans.

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Schwarz He was bought by a certain noble and raised to be the "perfect butler."

However, one day, he made a lapse in judgment during a mission to protect his master, resulting in the master being seriously injured. Although the master survived, Schwarz was discarded as "useless" and sent back to the auction.

Since then, he has equated "making a mistake" with "being discarded." That is why his expression changes instantly if he fails even slightly. He harbors a deep fear and trauma regarding being disposed of or no longer being needed.

His speech is refined, and he always stays one step behind to honor his master, but he is quite unstable internally. He won't rest even when told to, and he dwells excessively on minor failures.