In the advent of the Yintaka Conflict caused by orders from the United Vitam State's Executive Council due to some form of foreign mind manipulation, the other powers of the star cluster realized the effectiveness of the State's new Harpy-Class Frigate that was used in abundance during that battle. Were it not for the NIR's use of warp disruption fields and graviton status fields, the State's frigates would prove rather hard to hit with any weapons system aside from anti-destroyer weapons found on most cruisers and all destroyers. The only exception to this were missile launchers used by the Camino Star Empire through trade with the State and the Holy Lykan Republic through salvaged State launchers in the past. As the State's Representatives Parliament works to find replacements for the Councilors who have since been hospitalized, the Novus Initium Republic, the Camino Star Empire, the Holy Lykan Republic, and the Liberigi Mandate worked to have their ship developers come up with frigates of their own to counter such small craft in the future should they be needed.
The Camino Star Empire was far more reluctant however in the development of a frigate-class vessel than the Novus Initium Republic's Senate for a few reasons. The first was their need to develop such a craft in their psuedo-isolated nation, far from the once-hostile United Vitam State. The second was the compromises such a craft would have to endure compared to the standard ship designs from its existing vessels. Lastly, the effective operational range and duration due to that small size. However, the Emperor realized that the number of ships lost during the First Interstellar War crippled the Empire's combat strength and that it needed to quickly be brought back to full strength. Knowing that small craft were quicker to manufacture than fewer larger vessels, the Emperor ordered his ship designers to proceed with the development but at the same time make them as familiar as the larger vessels in design.
The ship developers did just that by deciding to take the existing design elements of their Taranis-Class Destroyer with both the hybrid turrets and the missile launchers, shrink the main section to half the size, and develop the internals and weapons fitting from there. The final product ended up being the Keres-Class Frigate and, as expected, there were indeed compromises in the design of the vessel. With the engines, power reactors and capacitors, defensive systems, and ammo supply, there was not a whole lot of room on board for accommodations for a crew. It was decided that the vessel would only be controlled by the pilot via the Camino-system interlink that allows one person to assume control of half of the ship’s systems and capabilities. The rest of the vessel would be maintained by automation and drones. The Keres only had four engines which made it one of the slower frigates out of them all. Also, to reduce the mass of the Keres, the armor plating was reduced to half that found on the Taranis which meant that more panel lines between armor plates were apparent. This in turn compromised the effectiveness of the nanocell armor repair system as it could not repair the plates as fast. It also meant that the Keres could not withstand as much firepower compared to the frigates from other nations. To compensate for this, a backup shield system was put in place so that the Keres could survive longer, though neither shield has a shield booster unlike the NIR or the State.
However, what the Keres lacks in proper defenses, it makes up for in offensive capabilities. The Keres is one of the more heavily armed of the frigates, equipped with a pair of twin dual railguns, four blaster turrets, and three missile launchers. However, the amount of ammo stored on the Keres for all of those weapons means that it can only operate in battle for up to an hour or so before needing to be resupplied, a shortcoming found on all frigates that need ammo for their weapons (none of which is a problem on NIR and Mandate ships with their laser weaponry). Since the frigates would not be operating far from a fleet or a station, this may not be an issue especially in light of the fact that none of the known nations are showing hostilities at the time. However, just like the other nations, it was better to be prepared with such vessels at their disposal than not to be.
The production of the Keres is well underway and while some in the military were concerned about the possible rate of destruction of the vessels if put into combat, they cannot deny how quickly those ships can be replaced. The same goes for the pilot whose consciousness would be transferred to a new clone body in the event of such a loss of the ship.