Old Article Extra

It is a new free extra chapter for an old article that has been marked as completed. It is updated from time to time, not necessarily which article, and the chapter names will be marked with cp. May be linked to each other. The title will be written. Because I have been writing new articles, this as an after-sales area is not updated regularly>< The seal on the lock was wrongly opened before. Extras will be added slowly as they become available. Purpose: After-sales area