Fire Release: Flying Grenade Jutsu

The user builds up chakra in their body and spits it out as an ultra-compacted fireball. The pressure of the compaction causes the jutsu to erupt into a deadly explosion upon impact with a target. This jutsu is thought to have been loosely inspired by the Great Fireball Jutsu of the Uchiha clan, trading off wild fire power for precise and heavy target destruction. A notable weakness of this jutsu is that the compacted fireball is very bright and that the fireball has very limited penetration power. To make up for the former weakness, most users seek to maximize the velocity of the projectile or use it at a closer range to minimize the target's window to react.