I just got done with the first three volumes, and I know there are more to read. But I do not understand which one continues where volume 3 left off. And there is also an anime of it too. I tried watching it, but the opening scene of them running out of the Heart Castle was unfamiliar to me, and I felt that it might be spoiling something I have yet to read in the manga. I'd really appreciate it if someone could help out as far as what manga I should read next in this series. And if someone could let me know if it is better to watch the anime after all the manga, I'd love that too.