The man in Naruto beats Itachi, and the first blood reward is the Gravity Knife.

[Naruto+Pirate+System+Villain+Hot-blooded+Funny+Imagination]Dragon Kingdom agent Qin You traveled to the world of Naruto and had sex with the ten-year-old Uchiha Itachi. And awakened the system that makes you stronger by killing people.As long as you fight, you will gain, as long as you kill, you will become stronger.His ultimate goal is to completely destroy the world of Naruto.“Ding! Congratulations, master, for killing a taijutsu ninja instantly and gaining the great swordsman-level swordsmanship comprehension talent.”“Ding! Congratulations, master, for winning the first blood of Konoha Jonin Asuma. Gaining the gravity fruit ability!”“Ding! Congratulations, master, for defeating the ANBU ninja Uchiha Shisui, and for upgrading the Sharingan to the kaleidoscope form!”“Ding! Congratulations, master, for defeating Orochimaru and gaining Overlord Color Haki!”…As time passed slowly, this day finally came to the night of genocide…