Sarutobi Saizo of Konoha

The Konoha Library was established only seven generations later. I'm too lazy to refute you on this point, but it's still the age of war. It's not good for you to put your family's ninjutsu in the library for others to see. You must know that before Sakura became Tsunade's teacher, even the three-skin jutsu was only at the graduation level, and she couldn't use it at all when doing tasks.

I have no money, so I can only give you one recommendation ticket, but come on (ง •̀_•́)ง I will get one every day

But he is an old author after all, and his writing is indeed good.

There is no way Shinkuna will go to the battlefield. Your obvious flaw