Swordsman improvements.

add chakra absorb when fused with samehada and hp recovery at the same rate of the chakra recovery.

Also add water shark prison dance technique for samehada fusion (Suirō Sameodori no Jutsu). It can look similar to the mist jutsu but it should trap the opponent and drain hp overtime like poison area.

you can disregard this last part if you want, just an idea. kisame was called the tailless tailed beast because of his superhuman body and large chakra reserve. So maybe that could be a game secret. would give a boost like juubi and maybe a giant water dragon jutsu or something.