Haven't noticed these chapters' comments before. Thank you kronix.
Anyway, I actually had great expectations for this manga. Too bad the last 5-or so chapters completely destroyed the whole story.So disappointed even though I shipped this pairing.
Developing a rash reaction to the supposed love interest, and having romantic dreams and confessing to another girl then coldly rejecting her to go back with the first love interest just makes Masamune detestable. Yoshino felt OOC in this chapter too, especially when showing how assertive she is. It's as if she's trying to hurt Aki in purpose, when she's shown so much care and love for her recently.
In conclusion, that was an extremely clumsy, axed ending. It kind of reminds me how Vampire Knight ended. But just like VK, I hope Masamune-kun no revenge gets some more extra chapters to deepen the relationships and the personalities of the characters. That's the only way the ending can be acceptable.