Responses
The rest of the chapters can be found:
https://ww7.mangakakalot.tv/manga/manga-lj988618
The uploader put it by its stage and part, rather than volume, which is why it says volume 45, although there are 20 volumes.
Currently, it is complete, but at 20, TWENTY, volumes... (⊙…⊙ ) not 15.
If someone could complete it, thank you so much... (づ￣ ³￣)づ