Weapons Guide

Kunai
Used by: Everyone
This is "knife"and very general and useful.
because you can use it as a projectile or just as knife in hand-to-hand combat.

Throwing Needles
Used by: Haku and few other ninjas.
This is very sharp and effective, just like kunai or other throwing weapons.
This throwing needle has actually same purpose as kunai. However you cant fight
with this needle. Haku used those needles most time when he was fighting against konoha genins.

Village of hidden rains umbrella
Used by: Village of hidden rain.
This hidden rain umbrella is not normal umbrella, if you want active it: you must throw umbrella to air
and perform special technique of hidden rain: "Jouro Senbon" and the umbrella will open and shoot
a large amount of needles to the enemy.

Exploding Notes
Used by: Everyone
Exploading note is a piece of paper wich contain little text on it.
But it "contain" actually little spell on it and calculate the right time to explode.
This is pretty useless if you dont have "trick", like send the exploding note with kunai
or leave it to clone, etc.

The Raijin Sword
Used by: Second Hokage and Aoi
The Raijin sword is very powerful weapon which used legendary second Hokage,
and later Aoi by tricking Idate. Even rasengan didn't really work to this sword, only Sasukes
chidori did little crack, and Naruto was able to crack the raijin sword perfectly with rasengan.

Toxic Needles
Used by: Aoi
Those toxic rain venom needles are VERY, VERY toxical,
just few toxic needles to your body and you are dead, no matter how big one's body is.
This Toxic Needle look as normal throwing needle, but this contain poison.
Again, there is a medicine to cure the poison in your body..