Chapter 6 of Beast of Reincarnation, titled Necrosis, transports players to the Fuji Frontier Zone following their arrival at the Matsukawa Colony's center. This section of the game involves traversing a large, ruined cavern, utilizing Emma's hair for traversal, and avoiding deadly falls.
Tracking the Nushi's Whereabouts
The chapter begins with the primary objective of tracking down the next Nushi. Upon disembarking from the Cleanse Walker, players should proceed forward, clearing out any Golems in their path. The first Dragon Vein Shrine for Chapter 6 can be found beside a staircase guarded by archer Golems. Ascending this staircase leads to an area with ruined buildings, a large copper pipe, and flying enemies. After clearing the enemies and looting the vicinity, players should ascend another set of stairs. Atop these stairs, Emma's hair can be used to jump onto a wooden shack and then onto the copper pipe. Following the glowing orange butterflies on the pipe will lead to a dead end. From here, players must use Emma's hair to create branches between steel platforms, navigating carefully to avoid falling. Grapple points are available to aid in traversal, though projectile-wielding enemies will present a challenge.
Eventually, players will reach the enemies who were attacking them, and beyond them, a small village populated by more foes and another Dragon Vein Shrine. After clearing the village, a friendly Golem can be spoken to, who guards the Spirit Stone: Infernal End and Manual: Explosive Arrows. Next, grapple up to the steel platforms above, continuing to grapple across the canyon to reach the Collapsed Pipes: Approach Campsite. Directly opposite the campsite lies the Spirit Stone: Final Infusion 2. Continuing forward reveals a blockade that can be cleared by shooting a small fiery vase beneath it. A subsequent blockade can be removed similarly, but the third blockade requires a different approach. Players must go left and follow a copper pipe to a small shack. Peeking through the vines to the right of the shack reveals a third vase that can be shot to clear the blockade.
Beyond this, a Merchant Golem offers wares and a strongbox containing the Dance Attire armor. Continue along the path, destroying Amber deposits, until the objective, a large Nushi, is reached. After a brief conversation with Brad, the hunt for Shidou's malefact begins.
Chasing Shidou's Malefact
Proceeding through the cave ahead, players must contend with explosive Headless Golems. An archer Golem positioned on elevated foundations can be dealt with using ranged attacks. The platform the archer occupied can then be used to access a Dragon Vein Shrine by climbing rocks to the right with Emma's hair. Returning to the main path, a gap between two platforms must be bridged using Emma's hair. Two deer malefacts will then appear, followed by the Defense Outpost: Outskirts Campsite.
Inside the hut near the campsite are the Bull Censer, the Manual: Bull Censer, and Normal Recipe: Meat Sandwich. Entering the stone tunnel beside the campsite leads to a challenging gauntlet against multiple enemies. Upon defeating them, the gates unlock, revealing items for Koo on the right and food items on the left. Continue upwards on a spiraling path, clearing Golems along the way. Crossing a bridge at the top reveals the Defense Outpost: Interior Campsite. Additional loot can be found by heading right from the campsite and using a grapple point, leading to an area with a Keeper Golem and a Strongbox.
To access more loot, fast travel back to the Defense Outpost: Interior Campsite and go left. A Dragon Vein Shrine guarded by an Elite Enemy is located here. To proceed, return to the Campsite and head straight towards the objective. At a dead-end, jump down to a platform on the left. From there, use Emma's hair to reach another platform occupied by Golems. After defeating them, destroy a red vase on the immediate right to open a new path. At the end of this path, multiple malefacts must be fought. Completing this encounter allows access to a Strongbox requiring a directional input minigame (Left, Down, Up, Down, Right) which yields 1618 Amber, a Generator Device, an Electronic Brain, and a Facility Module.
Exiting the cave and proceeding right, another Golem will appear. Before moving ahead, look down to find the final Dragon Vein Shrine of the chapter. Behind the shrine, within a cave, players can retrieve another Skill Amber for Koo. Returning to the Defense Outpost: Interior Campsite and exiting leads players back to the platforms traversed earlier. Using Emma's hair to cross gaps will bring them to the Defense Outpost: Wall Campsite. Following the objective leads to a mini-boss Golem, whose defeat opens the exit path to the Bridge Control Room: Approach Campsite. The Shark Cutter sword can be found directly beside it. Interacting with the bridge Control Panel here creates a shortcut back to the area's beginning.
Continuing the Chase
To the right of the campsite, players will encounter the Nue Malefact again. This boss retains its Chapter 3 moveset but can now fire a brief barrage of projectile seeds from its tail. It is advisable to avoid luring the Nue Malefact too close to the edge of the arena, as this can cause it to freeze and reset its health bar. The fight rewards the Dokuzeri: Fang 2 Bloom Art and the Finisher: Dokuzeri Blade Art.
The chase for Shidou's malefact continues in the direction the Nue Malefact fled. After battling Golems and a large mech, players will reach the Fallen Cliffs: Surroundings Campsite. This is an opportune moment to return to the Cleanse Walker for companion episodes or a meal before continuing.
Following the objective involves grappling and climbing along rusty pipes, with caution advised for flying enemies. Reaching the other side of the canyon leads to the Fallen Cliffs: Central Area Campsite. Interacting with the Control Panel beside the bulkhead door ahead progresses the journey. The next area is a large, ruined factory filled with flying enemies. Emma's hair is required again to reach the opposite side, where another Campsite and bulkhead door with a Control Panel are located, alongside a Merchant Golem. Resting at the Nushi's Lair Entrance Campsite and using the Control Panel opens the bulkhead door.
Ahead, a final confrontation awaits against the Nue Malefact and its handler, Male Purifier Shidou, both at Level 35. This encounter mirrors the fight from Chapter 3, with the pair having gained experience. Successfully defeating them concludes Chapter 6, paving the way for Chapter 7.