Mob's Iconic Look: The Unassuming Power Of Shigeo Kageyama's 'Big Clean Up Arc' 1st Outfit

The "Big Clean Up Arc" (also widely known as the 7th Division Arc) remains one of the most pivotal and emotionally charged storylines in the *Mob Psycho 100* anime and manga series. As of December 2025, discussions about this arc continue to highlight its perfect blend of breathtaking animation, intense psychic battles, and profound character development for the protagonist, Shigeo Kageyama, or "Mob." The term "1st outfit" associated with this arc doesn't refer to a special tactical suit, but rather the stark contrast between Mob's simple, iconic, and often-damaged school uniform and the overwhelming power he is forced to unleash against the formidable organization known as Claw.

This article dives deep into the details of Mob's standard attire during his infiltration of the 7th Division headquarters, exploring how this unassuming "1st outfit" ironically underscores his internal struggle and the escalating stakes of the entire mission. It’s a look that perfectly encapsulates the core theme of the series: true power lies beneath the ordinary.

Shigeo Kageyama: The Profile of an Overpowered Protagonist

Shigeo Kageyama, the main protagonist of the *Mob Psycho 100* universe, is an 8th-grade student whose quiet demeanor and desire for a normal life belie his status as one of the world's most powerful Espers. The contrast between his mundane appearance and his catastrophic potential is a central pillar of the series' narrative.

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• Full Name: Shigeo Kageyama (影山 茂夫)
• Nickname: Mob (モブ), White T-Poison
• Age: 14 (appears 15-16 in later arcs)
• School: Salt Middle School (塩中学校)
• Affiliation: Spirits and Such Consultation Office (part-time), Body Improvement Club
• Abilities: Immense Psychic Power (Telekinesis, Energy Absorption, Spiritual Awareness, Barrier Creation)
• Goal: To become a better, more charismatic person, and to control his emotional power.
• Family: Ritsu Kageyama (Younger Brother), Parents (Mr. and Mrs. Kageyama)
• Mentor: Arataka Reigen

The Simplicity of the '1st Outfit': Mob's Salt Middle School Gakuran

The "1st outfit" Mob wears throughout the initial phase of the Big Clean Up Arc is his ubiquitous Salt Middle School uniform. This attire is not a disguise or a special costume, but the standard Japanese male school uniform, the *gakuran*. The consistent use of this simple, black uniform is a deliberate artistic choice by the creator, ONE, to emphasize Mob's desire to blend in and live an unremarkable life.

The outfit's key details are:

• Color and Style: A traditional black, military-style jacket with a standing collar, fastened with a row of gold or brass buttons.
• School Emblem: A small, distinct school emblem is usually visible on the collar, identifying him as a student of Salt Middle School.
• Pants: Matching black trousers.
• Undershirt: A simple, often white, undershirt is visible at the neck.

In the context of the Big Clean Up Arc, the simplicity of this black *gakuran* uniform serves a critical narrative purpose. When Mob, alongside Teruki Hanazawa and Dimple (Ekubo), infiltrates the 7th Division headquarters of Claw, they are met with high-ranking Espers, including the powerful Ultimate 5 (Scar) members, who wear far more elaborate, often intimidating, or customized outfits. Mob's plain school clothes create a visual metaphor: he is just an ordinary middle schooler forced into an extraordinary, life-threatening situation to rescue his kidnapped brother, Ritsu Kageyama.

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The Narrative Significance: From Uniform to Symbol of Resilience

The Big Clean Up Arc is a turning point for Mob's emotional control and his relationship with his own psychic abilities. The "1st outfit" becomes a canvas upon which his struggles are physically displayed. Unlike a superhero's costume, which is often pristine or designed for battle, Mob's uniform is repeatedly torn, shredded, and stained with blood and dirt as he fights through the heavily fortified facility.

The Contrast with Claw's 7th Division

The antagonists of this arc, the members of Claw's 7th Division, represent the opposite of Mob's philosophy. They embrace their psychic power, using it for selfish gain and global domination. Their appearance reflects this: they wear varying degrees of stylish, often dark, and highly customized clothing. This visual contrast is intentional:

• Mob, in his simple black gakuran, represents humility, emotional restraint, and the value of non-Esper skills (like his commitment to the Body Improvement Club).
• Claw members, with their flashy attire and powerful telekinesis, represent arrogance and the corruption of power.

The sight of a small, unassuming boy in a tattered middle school uniform defeating a legion of powerful, well-dressed, adult Espers is a powerful testament to the series' message: genuine strength comes from character, not just raw power.

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Escalation and Emotional Control

The arc is a masterclass in tension, as Mob's emotional meter steadily rises throughout the battles. His "1st outfit" is present during several key emotional moments:

• The Discovery of Ritsu's Kidnapping: The catalyst for his journey into the Claw base.
• The Team-Up with Teruki Hanazawa: A crucial alliance where Teru, initially an antagonist, joins Mob to fight the common enemy.
• The Confrontation with Ishiguro: One of the most intense battles where Mob is pushed to the brink, resulting in the iconic, near-shredded appearance of his uniform.
• The Appearance of Reigen Arataka: The ultimate climax where his mentor, Reigen, arrives to "clean up" the mess, still wearing his business suit, providing a humorous yet deeply moving resolution to the conflict.

Each tear in the fabric of the gakuran symbolizes a moment where Mob's emotional control is tested, pushing him closer to the catastrophic 100% state. The uniform, therefore, acts as a visual barometer of his psychological journey.

The Lasting Legacy of the Big Clean Up Arc Outfit

The Big Clean Up Arc, which concludes the first season of the anime, solidifies Shigeo Kageyama's character and sets the stage for future conflicts with the overarching organization, Claw. The "1st outfit" from this era is more than just clothing; it is a profound symbol of the series' central themes.

The uniform's simplicity is a constant reminder of Mob’s desire to live normally, despite the overwhelming psychic pressure he carries. It highlights his genuine, human struggle to manage his emotions, which is his most difficult challenge, far exceeding any battle against powerful Espers. For fans, the sight of the Salt Middle School uniform, especially when damaged, instantly evokes the intense action, deep character development, and the powerful bond between the Kageyama siblings that defined this unforgettable arc.