The Kokushibo sword holds a prominent place in the anime and manga series "Demon Slayer: Kimetsu no Yaiba." This formidable weapon belongs to the character Kokushibo, one of the powerful Upper Moon demons within the series.

The Kokushibo sword is a manifestation of Kokushibo's Demon Slayer Mark and his innate abilities as a demon. It takes the form of a traditional Japanese katana with a distinct black blade. The blade is adorned with intricate patterns and etchings, showcasing the craftsmanship and attention to detail associated with demon slayer swords.

What sets the Kokushibo sword apart is its unique ability to change its shape and size. Kokushibo can manipulate the sword, elongating it and altering its appearance at will. This allows him to attack from a distance and catch opponents off guard, making him a formidable adversary.

The Kokushibo sword possesses incredible cutting power and is capable of slicing through even the toughest materials with ease. It is known for its sharpness and precision, making it a deadly weapon in the hands of its wielder. Kokushibo's swordsmanship skills combined with the sword's supernatural attributes make him a formidable opponent to the Demon Slayer Corps.

The Kokushibo sword is deeply tied to Kokushibo's character and backstory. It represents his role as an Upper Moon demon and his commitment to the demon hierarchy. The sword's unique abilities reflect Kokushibo's cunning and adaptability in battle, making him a formidable adversary.

In summary, the tensa zangetsu is a powerful weapon featured in "Demon Slayer: Kimetsu no Yaiba." Its ability to change shape and size, coupled with its exceptional cutting power, make it a fearsome weapon in the hands of Kokushibo. This sword serves as a reflection of his character and skills, embodying his strength and unwavering loyalty to the demon cause.