Note: I'll be using some mid recent events from Vampire Knight which for the readers who are caught up are not spoilers. But for those who have just started the series, those events may be considered "spoilers" for you.
If you're reading 'Bara to Juudan' online, there's only 5 updated chapters.
However, if you've read 'Vampire Knight', you can tell within the first several pages that 'Bara to Juudan' is NEARLY identical to 'Vampire Knight.' However, 'Bara to Juudan' gets cheesy really, REALLY fast. No joke. It got so cheesy that I started cracking up in the middle of reading it. The problem is this cheesiness doesn't work for the whole "vampire-queen-and-vampire-hunter-are-childhood-friends-who-love-each-other" idea of a plot.
So if you have read 'Vampire Knight' and have not read 'Bara to Juudan,' here's the basic idea of it.
Mistuki = Yuuki => Queen/Pureblood = aristocrat <
Ren = Zero =>Vampire Hunter/Slayer = hates vampires, but loves ^
The plot is fairly, fairly basic. Due to the fact that the mangaka probably didn't want it to be identical to 'Vampire Knight' and that it's only 5+ chapters in.
As I say with every manga though, the art is a 10. I can't draw better and you probably can't either so I'd be a hypocrite to say that the art was bad when it was obviously stunning. But again, the bloody lines are so cheesy like your typical Shoujo manga.
I really don't think this series will get very fair regardless of how many chapters the mangaka draws. It's too similar to 'Vampire Knight' and the idea is too cliche for a cliche idea.
So yeah... didn't enjoy the series at all. Planning to drop it soon actually.