It's not good to see too much anti-Su Wen, but I just want to complain about this. As well as expressing my views on the concept of "ninja", trying not to be cliché. Explain the title. To improve the acidity of the land, quicklime, which is calcium oxide, is generally used. You'll know the location later when you see it.
Reason for time travel: Because Chengzi was on a business trip, Calcium was left to look after the store alone. On this day, a group of people came to the store out of nowhere and insisted on going to the back of the store to take a look. Calcium couldn't resist it alone, so the things were misused and he even traveled to Naruto's world. Therefore, the loser Calcium decided to take on the responsibility alone this time and bring back those who traveled through the past. Also accompanying me is the cat teacher from "Natsume's Book of Friends" (which is Calcium's favorite "cat thing". Here's another point to complain about...).
Someone once asked me, if Mary Sue died, would it be called anti-Soviet?
My answer is: According to the world view of the article, Su Meizi cannot exist in the world of Naruto. If Su Meizi dies in Naruto's world, she will be fine if she returns to the original world. Time travel is something that breaks common sense. In order to maintain balance, a person cannot suddenly disappear or appear.
Therefore, in the end, even the existence of Calcium Oxide and the experience of anti-Soviet will be erased from the memory of the character of Naruto. Calcium oxide itself is also a time traveler.