The Kezur-class was a heavy bomber designed and manufactured by Imbac Engineering, a Cikkuik Confederation company within the Klexac Sector, shortly before the onset of the Shadow Fleet Crisis. The Kezur-class was one of several strike craft, including the much more popular Kaota-class interceptor, which were created for a major Cikkuik military procurement program to modernize the nation's navy. Imbac Engineering competed with other Cikkuik companies for light bomber, heavy bomber, and long-range strike fighter classes to improve the Cikkuik Navy's long-range strike capabilities in anticipation of conflict between the Klexac Sector and neighboring Tilanex Sector, which the Cikkuik Confederation had been in an ongoing and escalating trade war with for a little over two decades. Imbac Engineering won the heavy bomber contract with their 'Tegolla-Vea' prototype, the production model of which became known as the Kezur-class. Unfortunately, the team at Imbac Engineering would face significant difficulties transitioning the prototype spacecraft to a production model. Early into development of the final design, multiple prototypes experienced catastrophic failures during atmospheric reentry and when ascending to orbit. While no test pilots were injured or killed during these incidents, independent and company-led investigations into the causes of the crashes found that major structural elements of the ships' frames would, after repeated exposure to the vibrations and aerodynamic forces of reentry, develop serious microfractures. Fatigue damage was exacerbated by inadequate thermal protection by the hull plating along certain portions of the large wing-like structures. These deficiencies in the design were not caught during the Cikkuik Navy's testing phase of the contract competition or by Imbac Engineering's team simply due to testing being both too infrequent, as well as insufficient analysis on the part of the company. It would take several years to redesign core structural elements on the Kezur-class to solve these issues, prolonging the delivery of the first production bombers from the planned date of 48,427 ACT to 48,432 ACT - over five years late.

Once Kezur-class heavy bombers began coming off the production line, the military became aware of compromises the engineers had to make while addressing the aforementioned design flaws. The Kezur's powerplant was reduced in size to make space for additional structural bracing, leading to less power for its twin OD-1200 heavy laser cannons. Purchased from Dackol, a successful weapons manufacturer in the Cikkuik confederation, the laser cannons were originally designed with a 2.24 second cooldown to prevent overheating or major long-term component damage. Imbac Engineering modified the weapons to have a 2.50 second cooldown, allowing them to maintain their effective energy yield per shot since the vessel's reactor needed more time to supply the necessary power. The Kezur's missile capacity was also reduced, from 74 to 60 multi-purpose NNDA20-1054 Straeth nuclear missiles. These reductions in the weapon systems of the Kezur, as well as other performance hits which the engineers could not make up for without further delaying the project - which was close to being cancelled by the military, who would likely demand a refund of much of the development costs - were concealed from the navy, and would damage the relationship between Imbac Engineering and the Cikkuik government for some time afterwards. The problems did not stop on product delivery though. The autoloader for the missile launch systems, as well as the ventral mine layer, both were found to frequently jam following repeated high-g maneuvers, leading to high ongoing maintenance costs for Kezur-classes. Ultimately, the Cikkuik Navy would cancel the contract only five years after receiving the first production bomber. Imbac Engineering attempted to market the Kezur-class to other TAUFOG nations in the Klexac Sector and adjacent sectors, but found there was not much of a market for the style of heavy bomber that the Kezur was. Most TAUFOG militaries did not make significant use of mines, instead preferring torpedoes due to their limited mobility and better survivability against hostile point defense. The Kezur program was shut down by Imbac Engineering in the year 48,441 ACT, only nine years after creating the first bomber and 21 years after the program was started.