Konoha: I, Naruto, the Strongest Investor!

Traveling through time as Naruto, you get the most powerful investment system. You can put things into it and get multiple rewards in return! ! ! The maximum limit is three days! ! ! Invest in a bowl of ramen – get 1 bowl on your first day! The next day, get 10 bowls! On the third day, get 100 bowls! Invest one tael - get 1 tael on the first day! The next day, I got 10 taels! On the third day, I got 100 taels! Invest some stamina points - on the first day, you get 1 point, on the second day, you get 10 points, and on the third day, you get 100 points! Invest in a ninjutsu - 20% upgrade on the first day! The next day, upgrade by 60%! On the third day, upgrade 100%! Congratulations! This ninjutsu has been upgraded to lv2! … "Haha! If you invest, you can make a profit! If you invest, you can become stronger!" "Jiraiya? I'll learn from you hard! Show off!" "Uh, no! Please teach me how to make balls! So that I can invest!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.