Human Bullet Tank[1]
Name
Kanji	肉弾戦車
Rōmaji	Nikudan Sensha
Literal English	Human Bullet Tank
English TV	Human Boulder
Other	Leaf-Style Taijutsu: Human Bullet Tank (木ノ葉流体術・肉弾戦車, Konoha-Ryū Taijutsu: Nikudan Sensha; Literally meaning "Tree Leaf-Style Body Technique: Human Bullet Tank")
Debut
Manga	Chapter #55
Anime	Naruto Episode #33
Movie	Naruto Shippūden 3: Inheritors of the Will of Fire
Game	Naruto: Ultimate Ninja
OVA	Hidden Leaf Village Grand Sports Festival!
Appears in	Anime, Manga, Game and Movie
Data
Classification	Taijutsu
Rank	C-rank
Class	Offensive
Range	Short to Mid range
Other jutsu
Parent jutsu	Multi-Size Technique
Derived jutsu Ballistic Waterwheel Double Human Bullet Tank Spiked Human Bullet Tank
Users Chōji Akimichi Chōza Akimichi

A threatening taijutsu trick that converts the users large frame into a destructive weapon. The user first uses Multi-Size Technique to make themselves into a human-sized ball (though others can apparently do it without the need of using the Multi-Size Technique first), then they tuck in their limbs and use chakra to propel themselves into a powerful roll. Its effective use of weight and the force of rotation make for an even greater lethality than appearances would let on, enough to pulverise someone's hand with but a mere touch. It is difficult for the user to turn in this form. This technique has the added effect of plugging up the user's ears.

Trivia

• Nagare at some point saw this technique being used and copied it, creating the Assimilation: Rock Tank technique.
• The full name of this technique is Leaf-Style Taijutsu: Human Bullet Tank (木ノ葉流体術・肉弾戦車, Konoha-Ryū Taijutsu: Nikudan Sensha; Literally meaning "Tree Leaf-Style Body Technique: Human Bullet Tank").

References

1. ↑ First Datatbook, page 212