@RonBWL, Manga is not Comics that never end, Kaichou ending is a natural one as it was 13 volumes and thats normal length for a romance series and also she already have a ongoing series, Moujuusei Shounen Shoujo. Series end without being cancelled and publishers know in advance when series end and have replacements.
That note is just creating spite, yes people didnt like Masamune ending or rather some people didnt like Masamune PAIRING but its a hell of a stretch to point fingers at it for this series or Kaichou ending, reminds me when people blamed Parallel Paradise for School Prison ending.
I say again, this ended because of the LN ending, the people that read this likely read the LN and when it ended they lost interest on the manga and who can blame then? *I* lost interest when I learned who was going to win, its not the same as with Kaichou that I also know who wins (again, no suprise) but the focus on that one is different and people really should stop acting as harem series are dating sims were the only thing that matters is the damned ship, there is no better way to ruin a series community that shippers.