Movie
Description
Miroku Fujima serves as a primary antagonist and the Interrogation Officer of the Spirit World Warriors Society, having joined after working unaffiliated to further his personal goals.

His appearance undergoes a drastic shift. Initially, he appears as a tall, slim man with brown hair, blue eyes, a small stubble, green glasses, and black leather gloves, typically wearing a light-blue shirt, gray coat, and white pants while drinking banana juice. Later, corrupted by a growing youmu, he dons a flowing grey hooded robe. His left eye is consumed by glowing purple tentacles, requiring an eyepatch, while the left side of his head shows severe burns with rippled, cracked skin.

Outwardly, Miroku projects calmness, collectedness, and a positive demeanor, often smiling to mask his true manipulative, deranged, and obsessive nature, particularly concerning youmu and Izumi Nase. He persuades others to serve his interests while maintaining a laid-back facade and harbors demented delusions about reshaping the world. His obsession with Izumi led him to implant a special tentacle-like youmu into both his own eye and hers, creating a connection that later allowed him to attempt possession of her body, using the youmu as a conduit to understand youmu nature.

Three years before the main events, he interfered during the Nase siblings' attempt to extract Akihito Kanbara on Izumi's orders. He attacked them, triggering Akihito's berserk state and scarring Hiroomi Nase. After a standoff fight with Izumi, he retreated, vowing their paths would cross again.

During the initial Hollow Shadow incident, Miroku approached Izumi Nase, representing the Nase family, requesting permission to observe the powerful youmu's movements. Gaining access to the Nase domain, he monitored events, including Akihito's berserk state. He instigated conflict between Sakura Inami and Mirai Kuriyama, manipulating Sakura's grief over her sister Yui's death by providing a weapon that absorbed youmu essences. Though his plan to eliminate Mirai via Sakura failed, he retrieved the weapon and its accumulated youmu energies. He used these energies to destabilize the powerful youmu "Beyond the Boundary" within Akihito. While initially successful in forcing it out of control, Akihito, Mirai, and other Spirit World Warriors thwarted him, though he publicly revealed Izumi's youmu-infested condition, forcing her disappearance.

After his physical defeat, Miroku merged with Izumi through their shared youmu connection, taking over her mind and unleashing her darkness. Together, they spread a corrupting youmu influence globally for about a year, killing Spirit World Warriors and transforming them into shadowy creatures. Targeting amnesiac Mirai Kuriyama, he contacted her under disguise, offering information about her Blood Clan lineage as a ruse to infect her with a youmu, triggering a rampage aimed at killing Beyond the Boundary and converting more humans. Growing impatient, he impersonated Akihito to approach Mirai directly at her apartment. When she realized the deception via a phone call from the real Akihito, Miroku violently assaulted her, infected her with a youmu, and departed to let her wreak havoc.

His final plan lured key characters to an abandoned atrium, revealing his original body completely devoured and corroded by his youmu, reduced to an empty shell. A prerecorded message explained his goal to plunge all humanity into darkness through their inner youmu, leaving only himself and Izumi conscious. The Izumi-possessed-by-Miroku entity then confronted them after defeating Ayaka Shindou. Ultimately, Izumi was freed from his control by Hiroomi Nase, and Mirai was saved by Akihito Kanbara, severing Miroku's influence, neutralizing all infectious youmu, and expelling his consciousness from Izumi permanently.

Miroku demonstrates significant combat abilities: an expert swordsman capable of fighting evenly with Izumi Nase or Ayaka Shindou in her youmu form, and skilled in hand-to-hand combat, evidenced by his fight with Shizuku Ninomiya. He possesses deep expertise as a youmu specialist and surgeon, notably through the implantation of the tentacle-like youmu, and extensive knowledge about Beyond the Boundary.