Hidan no Aria - G no Ketsuzoku

[MangaDex]

 

[ysil69]

What is this chapter numbering? Why does it say vol 6 ch.39 is the ending?

 

[hauling777]

What is this chapter numbering? Why does it say vol 6 ch.39 is the ending?

I have no idea why but they split the series up into three different manga for some reason. It's not even the correct order.