Devil's Deal

The Devil's Deal is Ryuga Gentoku's personal sword and primary melee weapon in End War Online.

Design
Devil's Deal is a technologically-advanced longsword. Its blade is thicker than a longsword would normally be as a result of its "gimmick." The dark silver blade itself is actually constructed around a plasma generator covered by a black gauge separated into three segments in the same coloration as a traffic light; a red segment closest to the tip of the blade, followed by a yellow segment and ending with a green segment just above the guard. The dark silver crossguard lacks any ornate detail, though it is longer than a typical longsword. In the center of the crossguard is an open slot surrounded by black-and-yellow hazard striping that accepts [REDACTED] to further power up any attacks made with the Devil's Deal. Following the guard, the grip itself is a comfortable, ergonomic grip in black with a trigger installed to make use of the generator's special attacks with or without [REDACTED] further enhancing the generator's power. At the end of the Devil's Deal lies the Pommel Charger, a pommel that is pulled then pushed or allowed to spring back into the grip to deliver a signal to the generator to charge up the next attack. It can be use up to three times to consecutively charge the next attack. The segmented gauge acts as an indicator of charge and how dangerous the attack is to Ryuga himself and his enemy; green is the weakest, but last the longest safely standing by while attacks in the red have a very limited standby time despite providing the most damage. The following attacks can be utilized without [REDACTED]: When Devil's Deal is loaded with [REDACTED], Devil's Deal announces "Calibration!" and upgrades the Charge Slash attacks into the Plasma Lacerater attacks. Plasma Lacerater attacks take on attributes associated with the essence contained within the loaded [REDACTED], all at varying damage levels depending on the amount of Pommel Charge pulls. The announcements upon pulling the Pommel Charger change into "[Charge level] Lacerater!" An example would be the Ultracharge Slash being upgraded into the Ultracharge Lacerater.
 * Charge Slash - By pulling the Pommel Charger once, Devil's Deal announces "Charge!" and the green segment of the gauge is filled with pulsating energy. Once he pulls the grip-installed trigger, Devil's Deal announces "Charge Slash!" and channels the gathered energy into a temporary plasma coating on the blade to enhance Ryuga's next attack.
 * Supercharge Slash - With two pulls of the Pommel Charger, Devil's Deal fills both the green and yellow segments with pulsating energy while announcing "Supercharge!" When Ryuga activates the attack by pressing the trigger, the sword announces "Supercharge Slash!" and enhances the next strike even more than the Charge Slash.
 * Ultracharge Slash - Three pulls of the Pommel Charger causes Devil's Deal to announce "Ultracharge!" and fill the entire gauge with pulsating energy. The moment he pulls the trigger, the sword directs all its energy into the blade to create a powerful, plasma-charged slash.

Trivia

 * The Devil's Deal is in reference to the tale of Faust, where the protagonist (Faust) makes a deal with Mephistopheles, who is an agent of the devil; thus, it remains in line with Ryuga's Faustian theme.
 * The weapon itself is based off the Beat Closer from Kamen Rider Build.