This is used to place the extravaganzas, explanations and other content of old articles that broke out after the completion. It would be too long to put in the main text, and some friends will set it up so that the comments are not displayed, so I put them here separately.
Essay themes, extra content here is free~
The specific extra of which article will be written in the chapter title.
Beware of spoilers!
Intent: extra
