Medoshiki

Overview
A sword created for and used by Tosen Uzumaki, the first Uzushiokage. It was a sword forged with various seals to make it an efficient blade to be used in conjunction with fuinjutsu. It had built in seals which allowed anything stabbed by it or any chakra it comes into contact with it be absorbed and sealed withing the blade. Not only that, but it can be used to create seal and barriers easily. Its downside is that it has a very small capacity in the blade so any energy inside must be transferred to a person or another seal. This is a must because when the blade reaches its capacity it is rendered useless even in creating seals. Tosen lost this sword in a wager he lost against a foreign merchant he met quite early in the blade's lifespan. As if by fate the sword soon reached the hands of Tosen's grandson Kikatake Uzumaki.