Human Projectile Tank is an Akimichi clan taijutsu that looks spectacular and sweeps away everything in its path. The user curls into a ball and rolls straight at the enemy. The rotational force is such that most obstacles are simply crushed or knocked aside on contact. If there is a slope or a ramp nearby, one can spin up into the air and crash down from above, adding fall height to the strike. Almost any oncoming attack during this spin will be ineffective and cause no harm.
The technique works best together with Size Increase - then the ball becomes bigger and heavier, and the damage is noticeably higher. But even without the increase it is used when one needs to act quickly. The body position depends on the form the Akimichi has taken. When he puffs up to a round state, the head, arms and legs are drawn inside the torso - this way they do not hinder rolling, and the fighter stops hearing sounds from outside. When he simply becomes large, he no longer draws in his limbs. The knees are tucked to the chest and fixed with the hands.
The speed of this projectile is good, but it is not easy to control. To turn around or sharply change direction, one has to brake and come out of the spin for a second - and that is already a risk. Therefore they usually use a straight ram, less often an arc, and try not to weave.
