Throughout every realm of the world, certain beasts are classified as "ultimate species," possessing extraordinary strength and arcane power that places them at the pinnacle of the hierarchy. Consequently, many people desire these powers in pursuit of dominance, driving several of those creatures toward extinction. Rein Shroud, a seasoned beast tamer, can call upon diverse animals for tasks such as scouting, reconnaissance, and supply transport across perilous terrains. His skill led him to join a mercenary group commanded by the cruel, scheming hero Arios Orlando; however, after six months of service he was expelled because his role offered no combat advantage. Unaware of this dismissal, the party did not realize that Rein was a rare talent among tamers in that era. His true potential emerged when he encountered Kanade—a feline spirit belonging to the ultimate species—in a hidden glade, and forged an indomitable pact with her. Together, they embarked on an adventurer"s path through countless trials, with Rein steadily climbing the ranks and encountering additional ultimate species along the way. Their growing bond and shared victories earned them respect among allies, further solidifying Rein"s reputation as a formidable beast tamer.
