Book title, Survivorship Bias, also known as Survivor Bias
Although the labels may be slightly off, this article has CP and single arrows
The protagonist Shiina Ze herself is a character who breaks iron, but unfortunately she has no connection with that world now. I'm afraid, the only connection is her confusing identity, right?
——There is no saved manuscript of the full text, and it follows the main line of Gintama. It will be updated from time to time when there is inspiration, and it will generate electricity for love.
Ooc apologizes and avoids lightning on its own.
No protagonist.
Intention: The motivation to persevere is my love for Gintama