Naruto's Big Tentacle

I believe you already had a guess about the plot when you saw the title of this book, right? Yes, this book tells the story of a smart, brave and upright young man who obtained the tentacle monster growth system, worked hard to attract beautiful women in the world of Naruto and One Piece, and finally became a super invincible tentacle monster. Well, I want to say that this is a very pure book. Do you believe it or not? Well, actually I don't believe it myself... The book club number is **. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.