I'm sorry, this article will be updated in the future. It was interrupted before because of academic problems. I wanted to update it again later, but the writing idea of the article has been discontinued, and I want to change the previous content. In short, I don't know how to write this article completely, so I just quit it and plan to start a new article. The protagonist and CP will not change, but the content will change.
Purpose: Travel through time to save the world