Kokushibo – Demon Slayer: Kimetsu no Yaiba
Also known as: Upper Rank One (Upper Moon One)
Set your heart ablaze!
Character Overview
Kokushibo is a Upper Rank One (Upper Moon One) in Demon Slayer: Kimetsu no Yaiba, first appearing in Episode 1. The character is known for mysterious and Jealous and plays a key role in Twelve Kizuki.
The strongest of the Twelve Kizuki and former Demon Slayer, Yoriichi's twin brother.
Basic Information
Role & Status
Notable Quotes
Set your heart ablaze!
Delicious! Delicious! Delicious!
I will fulfill my duty! I won't let anyone here die!
Mother, did I do everything right? Was I able to fulfill my duties?
Stand tall and be proud!
Background Story
Origin
Born as Michikatsu Tsugikuni in the Sengoku era, he was the twin brother of Yoriichi Tsugikuni, the creator of Sun Breathing. He became a samurai and later a Demon Slayer, but harbored intense envy toward his brother's superior talent.
Early Life
First appeared in Episode 1, establishing the foundation for their character development and story arc.
Key Events
Frustrated by his inability to surpass Yoriichi and fearing death from the Demon Slayer Mark, he accepted Muzan's offer to become a demon. He took the name Kokushibo and spent centuries as Upper Rank One, hunting down Sun Breathing users.
Personality & Psychology
Core Traits
Strengths
Weaknesses
Motivations
No motivations listed.
Fears
No fears listed.
Moral Alignment
Abilities & Skills
Primary Abilities
Secondary Skills
Special Powers
Equipment
Combat Style
No combat style described.
Relationships
Character Development
Character Arc
Character development showcases growth through their Jealous and Prideful nature, evolving from initial appearances to become a more complex and beloved character.
Growth Moments
Key Turning Points
Initial debut in Episode 1 established character foundation
Development of signature catchphrases that became part of character identity
Lessons Learned
Future Goals
Strengthen bonds with loved ones and create new meaningful connections.
Trivia & Fun Facts
Interesting Facts
First appeared in Episode 1
Is a demon (former demon slayer)
Works as a upper rank one demon
Known for being jealous and prideful
Famous for saying: "I wanted to be like my brother... I wanted to be the strongest."
Behind the Scenes
Character debuted in Episode 1
Cultural Impact
No cultural impact information available.
Fan Favorites
Signature catchphrases and memorable quotes
Media Appearances
First Appearance
Episode 1
Major Appearances
Voice Actors
Merchandise
Collectibles
No Collectibles Available
Merchandise information for this IP is not yet available.