Naruto: Scientific Ninja Tool Starts with a Headshot with a Pistol

Sir, times have changed. Traveling through the world of Naruto, I became a cannon fodder genin. During the Third Ninja War, the border of Grassland was ambushed by Iwagakure Jonin. The captain was beheaded, his teammates were strangled by Tudun, and I was left seriously injured and on the verge of death. "Ding! The scientific ninja tool system is activated!" Looking at the dazzling array of chakra weapon drawings on the system interface. Trembling, I exchanged the first weapon. The Iwagakure jounin raised his kunai with contempt: "Kid, don't be one in the next life." I raised the black pistol in my hand. "Bang!" The kunai shattered and the bullet penetrated his palm. In his stunned eyes, I grinned: "Sir, times have changed." --- This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.