Monster Farm: Enbanseki no Himitsu

In the once-advanced civilization, humanity's expertise in genetic engineering led to the development of special designer pets, created through gene manipulation and stored on stone tablets called "disks." These disks, similar to CDs, contained the genetic information necessary to regenerate the artificial animals at special shrines. However, the outbreak of war between nations led to the modification of these pets into biological weapons, and the conflict known as the "War of the Monsters" began. The great civilizations annihilated each other, leaving behind only relics and a lost legacy of technology. The monsters were sealed into their mystery disks and hidden away, only to be rediscovered centuries later by humanity, who attributed divine properties to the artifacts of the so-called "Ancients." As people began to rediscover basic technology, they found the lost disks and shrines, and with them, the ability to revive the monsters. The power of the phoenix was necessary to reactivate the lost discs, and thus, a new sport emerged: Monster Breeding. Breeders and trainers raised monsters for battle, competing in nation-wide tournaments to determine who could raise the strongest beast.