Evil Pieces

The **Evil Pieces**, also known as the **Devil's Pieces**, are a set of 15 chess pieces given to **High-class Devils** to increase their ranks by reincarnating other beings into Devils.

## Summary

The Evil Pieces were created by Ajuka Astaroth using the crystals available in the Agreas Island to help replenish the number of Devils after the Great War which had caused the death of countless Devils. While many Devils were able to adapt to the Evil Pieces, the **Old Satan Faction** rejected the usage of the Evil Pieces, believing them to be a disgrace to Devils for reincarnating Humans and other races into Devils. The creation of the Evil Pieces eventually lead to the creation of the **Rating Game**.

Evil Pieces are commonly given to Pure-blooded High-class Devils, so that they can gather servants of their own. Reincarnated Devils are also given the chance to receive Evil Pieces should they rise in rank and become a High-class or Ultimate-class Devil like Tannin and Rudiger Rosenkreutz​.

When a Devil receives the right to obtain the Evil Pieces they are required to go to the Satan's territory and touch a monument which functions as a replacement King Piece to register themselves as King. A Devil who declines Evil Pieces can apply for them later.

If a King wishes to trade a Piece with another King, a ritual must be performed. A trading-purpose magic circle must be drawn. The Kings stand at the side of the magic circle while their pieces stand in the centre of it. The Kings increase their auras while putting their hands forward and activate the written Devil symbols to circulate. The auras of everyone around them begin to glow and synchronize, bypassing the magic circle. With that, the ritual will end and the trade is completed in a simple manner. A trade can still occur even if one of the pieces of the other party has not been used. It is also possible to trade multiple pieces simultaneously, even if they come from different peerages.

Evil Pieces can completely create Evil Pieces themselves if they are smart enough, for example, **Aaron** discovered the operating principle of Evil Pieces and can completely recreate it. Aaron can also modify Evil Pieces arbitrarily as he customized to create **Brave Saint** also known as **Royal Users**, which can allow Angels to reincarnate or angels to turn humans into Angels. And some other things based on the Evil Pieces of the Devils system, he did all of that even though he couldn't get his own Evil Pieces but completely used his intelligence.

Even a normal human like **Rika Shiguma** can crack the Evil Pieces of the Devils system, the only difference with Aaron is that she needs a sample (Evil Pieces). That doesn't mean Rika Shiguma is less intelligent, it's simply that she has never come into contact with the supernatural just as Aaron is too smart.

## Appearance

The Evil Pieces are identical to normal chess pieces in terms of appearance but will glow in accordance to the aura color of its users when in use.

## Abilities

Based on the game of chess, there are a total of 15 pieces (1 Queen ♛, 2 Rooks ♜, 2 Bishops ♝, 2 Knights ♞, and 8 Pawns ♟) that are given to High-class Devils (King ♚) with a peerage. These pieces are used to reincarnate other beings into Devils and become servants of the High-class Devil.

However, Evil Pieces' reincarnation ability is not absolute because they cannot reincarnate creatures such as Gods, Buddhas or those stronger than them into Devils even with Mutation Pieces. One of the proofs that the regeneration ability of Evil Pieces is not absolute is that Diodora Astaroth was unable to use Evil Pieces to regenerate **Sword Maiden** because she was protected by Auriel's aura. Thanks to Diodora Astaroth's stupid play, the devil side had to confront one of the strongest guys, leading to a lot of damage for the devil faction.

The recipients they're used on still retains features and abilities exclusive from their previous race. The Evil Pieces can reincarnate those who died recently, or anyone still living who chooses to be reincarnated willingly as was the case with Ingvild.

Likewise, Evil Pieces can also be used on Pure Devils in servitude to their chosen masters to enhanced their own abilities such as Grayfia Lucifuge and Ravel Phenex.

### Irregular Abilities

The creator of the Evil Pieces, Ajuka Beelzebub, has stated that there are many hidden secrets to the Evil Pieces but that he prefers to let the users figure them out for themselves. Currently some known unique traits that have been shown include:

* The Evil Pieces can reincarnate the spirits of Sacred Gears if they manifest themselves as shown with Regulus.
* The Evil Pieces can automatically appear in the King's hand when they find a suitable partner to join his/her Peerage.

## Pieces

The strengths, talents, and skills of the being to be reincarnated plays a large role in determining how many pieces will be used for reincarnation. Different Evil Pieces cannot be used together. Evil Pieces can also be exchanged between high-class Devils with peerages.

### Queen

**Queens** are worth 9 Pawns. Queens possess all the characteristics of Rooks, Knights, and Bishops, making them the most balanced piece as well as the most powerful. Within individual peerages, Queens typically act as their master's second-in-command, overseeing the rest of the peerage.

### Rook

**Rooks** are worth 5 Pawns. Rooks gain superhuman strength, leading to high offense and defense. However, they are not very quick, and can get beaten easily by a high-speed opponent. In later Rating Games, it is demonstrated that Castling can be performed with people who hold Rook pieces.

### Bishop

**Bishops** are worth 3 Pawns. Bishops gain enhanced demonic power and magical abilities which they can use to conjure up a multitude of spells (offensive, healing, etc.). However, more powerful spells consume most of their demonic and magical powers, which takes a long time to regain, forcing them to use their power carefully or risk becoming vulnerable to physical attacks.

### Knight

**Knights** are worth 3 Pawns. Knights gain increased speed and mobility, enabling them to perform high-speed attacks and maneuvers. However, their main weakness is their low defense, making them vulnerable to powerful attacks if they are not careful. Another weakness among knights are their legs; if their legs are injured, their mobility is greatly reduced.

### Pawn

**Pawns** are worth 1 Pawn each. The traits of Pawns is the ability to promote into a Queen, Rook, Knight, or Bishop in enemy territory or with the permission of their King.

## Variations

### Mutation Pieces

There are also special pieces known as the Mutation Pieces. If reviving a person requires more than one piece, then using one Mutation Piece would be sufficient in reincarnating that person instead of having to use several pieces. Mutation Pieces can be a Queen, Rook, Knight, Bishop, or Pawn. They are said to be very rare, and only 1 out of 10 Devils possess the Piece. The Mutation Piece is said to be a bug in the Evil Pieces system that was kept for fun. Normal Evil Pieces can also change into Mutation Pieces.

### Unused Pieces

Another feature installed in the Evil Pieces are the Unused Evil Pieces, which will undergo changes according to the master's growth, allowing the King to use less pieces when reincarnating other beings into Devils.

### King Piece

King pieces are rare pieces created in the early days of the Rating Games. Unlike the other pieces which grant special abilities, the King Piece simply boosts a person's power. However, the King piece's strengthening is anywhere from 10 to 100 times and more. There are restrictions to its use. One, the user cannot already have an Evil Piece(s) because the King piece would overlap with their current piece(s) and expose them to dangers. Two, the user can potentially die if they are too strong. There are only nine unused King Pieces in existence, but they were banned by the current government from use for fear that Devils would use it to pursue evil desires.