Kuro's Katana

Kuro's Katana, also "Katara Kuro", is an ancient Weapon known for it's Strength. It is capable of killing even immortal Creatures like the Original Animatronic or Advanced Original Animatronics. Even tho this is only possible when the Sword is in it's activated Form, it's very strong against any Kind of superhuman or magical Being anyways.

Anyways, against Human's, this Sword is almost like a dull Blade.

Normal Form
Kuro's Katana is a Katana with a long, curved Blade made out of rare earth Metals and Substances. Between the Blade and the Quillons, there is a platinium Connector, which connects the Blade with the Handle. The Handle itself is made out of hardened leather, covered by some kind of elastic Fabric.

Activated Form
In it's activated Form, it has two red glowing Kanji with the meaning "Kuro" (Black) at each side of the Quillons.

Powers and Abilities
As mentioned, the Sword is able to kill superhuman and magical Beings, and even Immortal Beings in it's activated Form. It kills any superhuman being, depending on it's defense and abilities, within seconds after one or two cuts through the upper body. However, on Immortal Beings, it needs to hit the Heart, otherwise they survive easily due to their Immortality.

Activated Form
In Order to kill Immortal Creatures, it needs to be activated, which happends if the Katana is held by specific Creatures. "Kuro" is one of them.

Indestructibility
It was, just like other Immortal Beings, created with an Immortality Spell, connected with dark magic. It's not clearly discussed, if it could theoretically destroy itself.

Weaknesses
It's main Weakness is that it's unable to kill any normal human Being.