Naruto: It Seemed Like He Was Invincible at the Beginning?

An otaku traveled to the world of Naruto and got system cool text Uchiha Madara: Impossible! The high fire ball you used is actually stronger than my high fire extinguisher! This is simply impossible! What is going on! Me: That's because I have a system! Kai: Your physical skills are actually better than mine at opening the door to death! How on earth did you do it! Me: I just modified my physical skills This book is purely fictional! If they are the same, then let them be the same! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.