Samehada is a well-known sword in the world of Naruto ninja. This sword is also known by the nickname “Shark Skin.” Samehada is unique as it is a living organism, taking the form of a sword with its own consciousness. If it ever falls into the hands of an unworthy user, this sword has the ability to “reject” its wielder and instead choose a more suitable partner, making it one of the most formidable weapons in the ninja world.
Samehada first appeared in the possession of the Mizukage and was later passed down through various members of the Akatsuki organization. Over time, this sword came to be wielded by Hozuki, Fuguki, Kisame, and ultimately by Killer Bee from the Hidden Cloud Village.

However, the bond between Samehada and Kisame is unique. When they are together, Kisame is seen as a formidable force, fueled by an inexhaustible chakra supply that seems never to dwindle.
Despite their strong relationship, Samehada ultimately chose to side with Killer Bee during their confrontation. But what led to this unexpected turn of events?

While Samehada was fond of Kisame, it had a particular interest in chakra. Killer Bee, as a jinchuriki, possesses an immense chakra reserve. Thus, when Samehada encountered a user like Killer Bee, it recognized this and, driven by its desire for chakra, chose to align itself with him.
In their first battle, Samehada was drawn to the unique chakra of Bee, which ultimately benefited Kisame. However, after Kisame’s demise, Samehada mourned his loss. This indicates that the sword had a genuine affinity for Kisame.