@WLeung
The manga is popular, but don't appear in the front page with the last updates anymore, after all the translation finished 3 years ago, back then this site wasn't that popular, you can only see recent mangas with a lot of comments.
So far I can't really hate the rival too much, she fights like a legit rival unlike some rivals I've seen where they have no redeeming qualities at all and you hate them, cause they are made as a character to hate, not a rival character.