1. Golden Staff: The Golden Staff is the must-know weapon of the Third Hokage, Hiruzen Sarutobi. It is the transformed version of the spirit beast Enma, known for its indestructible body. As a top-level artifact of Konoha, the Golden Staff is rarely seen and can only be witnessed when the Third Hokage summons Enma. This makes it a deeply hidden weapon.

2. Shikotsumyaku: Kimimaro Kaguya, the leader of the Sound Five, possesses the unique Kekkei Genkai called Shikotsumyaku or "Bone Manipulation.

" With this ability, he can transform his bones into offensive or defensive measures, granting him absolute defense and extraordinary physical attacks. Kimimaro keeps these bone weapons hidden from ordinary people and only reveals them during critical moments.

3. Kusanagi Sword: Orochimaru's Kusanagi Sword is a famous artifact among Naruto fans. It is known as the "sword that can cut through anything" and is made from the hardest substance in the world.

Orochimaru hides the sword within his body and can regurgitate it from his mouth when needed. This illusion of "sword swallowing" is quite disgusting.

4. Sword of Totsuka: Itachi Uchiha possesses the Mangekyou Sharingan and two spiritual weapons: the Sword of Totsuka and the Yata Mirror. The Sword of Totsuka is an ethereal weapon and the strongest sealing sword. However, it remains hidden within Itachi's Sharingan and cannot be found even after years of searching by Orochimaru.

5. Giant Sword: Hashirama Senju, known as the "God of Weapons," possesses immense power, the rare Mokuton ability, and the ability to enter Sage Mode instantly. During his fight against Madara Uchiha, he used a "Giant Sword" to counter Madara's sickles and fan. Hashirama always carries a large scroll on his back, which seals various weapons. He can summon them during critical moments. Hashirama can be considered the strongest ninja in the ninja world due to his ability to hide weapons in the scroll.