One of the notable examples of the biggest swords in anime is the "Buster Sword" from the popular series Final Fantasy VII. The Buster Sword is wielded by the protagonist, Cloud Strife. It is an iconic and oversized weapon that has become synonymous with the character.

The Buster Sword is a massive, two-handed sword with a thick, broad blade and a distinctive crossguard. It has a unique design, with intricate details and engravings. The size and weight of the Buster Sword make it an imposing and visually striking weapon in the anime and game.

While the Buster Sword is particularly famous for its size, it's important to note that exaggerated and oversized swords are a common theme in anime and can be found in various other series as well. These swords are often used to accentuate the power and presence of the characters who wield them, contributing to the dramatic and visually captivating aspects of the anime medium.