Casey Shield, a hacker who invented the Dynamax Simulator, and Henry Sword, a boy who repairs gear for Pokémon, both dream of entering the Galar region's Gym battles. For Casey, it's a chance to reunite with her lost Pokémon. For Henry, it's an opportunity to search for the legendary Rusted Sword and Rusted Shield.

When the demons return with a vengeance, Olive, destined for a role as leader and savior, and Darlin, struggling with his supernatural senses, strive to walk their own path, but are inextricably tied to the legacies of their parents and a fated confrontation with the demon king and his new, hatchling queen.

"...a pair of self-contained stories set within the 80,000 year history of BRZRKR! In Poetry of Madness, a sea of gore and devastation awaits as B., through a fateful chance encounter, safeguards the advanced and ancient realm of Atlantis as its unstoppable protector. But a sickly monarch serves as a symbol for the rot inside, as the security and bliss created through B.'s violence is shallow...the cracks created by a secret cult might spell a monstrous...