DESCRIPTION
这次没有完全跟上一章节的结尾接上，之前的结尾可能会出小番外故事来讲完。
这章主要讲述一下整个故事的来龙去脉，方便写接下来的情节
This time the ending doesn't fully connect with the previous chapter, and the previous ending may be used as a small side story to finish explaining.
In order to better introduce the following plot, This chapter mainly tells the background and context of the whole story