Kokushibo is the strongest of the Upper Moons, a former Demon Slayer who chose to become a demon. Here is his story and the terrifying Kyokokukamusari.
In this story · この物語の品
Six eyes, a samurai's armour and a sword covered in eyes. Kokushibo, Upper Moon One, is the strongest demon after Muzan himself, and his blade is the most unsettling in the series.
Who is Kokushibo?
Before he became a demon, Kokushibo was Michikatsu Tsugikuni, the twin brother of Yoriichi Tsugikuni, the first user of Sun Breathing. Eaten up by jealousy of his brother's talent, he accepted Muzan's offer to become a demon so he could keep training forever.
His fight in the Infinity Castle is one of the hardest battles the Demon Slayer Corps ever faces.
The sword
Kokushibo's sword, Kyokokukamusari, is made from his own flesh. Eyes cover the blade, and when he fights it can grow longer and sprout extra branches.
He fights with Moon Breathing, a style he created, whose strikes leave crescent-moon blades in the air.
Which Kokushibo katana should you get?
- Kokushibo wooden katana (₹1499): hand-painted wood core, 104 cm. Best for walls, collections and cosplay.
- Kokushibo LED katana (₹2499): the blade glows, USB Type-C, double tap to switch on. Best for gaming setups and dark rooms.
Every version is about 104 cm long with a decorative, non-sharp blade.
How to choose
Kokushibo's sword comes in two styles. Here is how to decide:
- Pick wooden if you want the closest look to the anime, plan to hang it on a wall, are building a collection, or need it for cosplay. It needs no power and the hand-painted details stand out in daylight.
- Pick LED if it is going behind a gaming monitor, on a shelf in a dark room, or you want it to be the first thing people notice. It runs on USB Type-C, so a power bank works for photos and events.
Will it fit my room?
At about 104 cm, the katana is roughly the width of a small desk. On a wall it needs about 110 cm of free space; on a stand, a shelf or desk at least 30 cm deep. Our stands keep it level and stop it from rolling.
Buying Kokushibo's katana as a gift?
It works well for birthdays, Diwali, Raksha Bandhan and graduation, for anyone who has watched the series. Add a stand so it can go on display the day it arrives. If you are unsure which style they would like, the wooden version is the safer choice for collectors and the LED version for gamers.
Display ideas
Kokushibo across from his brother's Yoriichi LED katana is the ultimate Demon Slayer pairing: moon against sun. Put it on a single, double or triple katana display stand to keep it straight and safe.
Key moments in the story
- First appearance: Kokushibo is shown kneeling before Muzan with the other Upper Moons, the only one Muzan seems to respect.
- Gyokko's death: after the Swordsmith Village, he warns that the Corps is growing stronger.
- Infinity Castle: he faces Muichiro Tokito, who turns out to be his own descendant, then Gyomei, Sanemi and Genya at once.
- His past: flashbacks show Michikatsu's lifelong jealousy of his twin brother Yoriichi, the root of everything he became.
Did you know?
- Kokushibo has six eyes, three on each side of his face.
- Before becoming a demon he was a Demon Slayer himself, one of the first Breathing users, with a mark on his face.
- He carries a flute that his brother Yoriichi made for him as a child, a detail that says more about him than any fight.
- Moon Breathing is the only style Kokushibo uses; it was never passed on to anyone.
- Kokushibo's battle in the Infinity Castle is still to come on screen: Part 2 of the film trilogy is not expected before 2027.
Frequently asked questions
What is Kokushibo's sword called?
Kyokokukamusari. It is made from his own flesh and covered in eyes.
Who is Kokushibo related to?
He is Michikatsu Tsugikuni, twin brother of Yoriichi, and an ancestor of Muichiro Tokito.
Is the blade sharp?
No. All our katanas are display pieces with decorative, non-sharp blades, made for walls, desks, collections and cosplay. They are not for sparring or cutting.
Does it come with a stand?
The display stand is sold separately. Our single, double and triple katana stands fit all UrbanNook wooden and LED katanas.
How is it packed and delivered?
Every katana is packed in protective packaging for its full 104 cm length and delivered across India. Report any transit damage within 3 days with an unboxing video and we replace it free.
Care
Keep it out of strong direct sunlight to protect the finish, and wipe it with a soft dry cloth. All our swords are decorative with non-sharp blades.
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