This manga is a perfect example of how easy it is to throw away all the story told so far, well-built characters, all the plotlines developed and all your time reading them in just 1 chapter. I'm not kidding, although my score will be 9 because I liked 99% of everything and thus i'll reward it with that, but that 1% completely drowned out a 10 that would have been very easy for me to give and i can't possibly go down a 9 with my prospective because for 99 out of 100 chapters i enjoyed a lot the storyline, yes it was rushed fromthe 70th chapter circa but still awesome.
I honestly don't understand at all why choosing this ending, like AT ALL, but I can't and we can't help it.
I strongly not recommend reading this story if you are a lot annoyed by random endings put it just to finish a storyline.
If you are not particularly interested in this aspect then read it but know that the ending will leave you very disappointed.

For the scoring system of this site i'll give all 10 in all aspects EXCEPT the ending aspect that is easily a 0/10.
Cheers