First of all, I would like to clear this is not a manga, it's a manhwa(Korean comic). And I am totally in love with this series.

First reason of my unbound love for "Noblesse" is because of the beautiful art. Author has done an awesome work to express each character's emotion and expression. For an example anyone will fall in love after seeing Rai's(the leading character) handsome face, narrow eyes and pride full expression.
I remember the day when I started reading this story, I was totally shocked when I first saw Rai. Oh my gosh! what a handsome person. Not only the main character, all other characters are really well drawn.

Second and the most important reason is the strong story line. Noblesse is not a average vampire story or some happy-go-lucky love story. This is about vampires, who are known as Nobles. They are powerful, prideful and very kind towards the powerless human beings. They think its their duty to protect humans.
As time changes some Noble started doubting their resolution towards humans that "Do humans really need our protection?" Or "it's us who are being left behind by the humans". A fantastic, action packed fiction story with scenes of war between human created mutants, nobles and werewolves. If you are a fan of supernatural creatures with school drama, then this is the right series for you. Go ahead and have a wonderful experience of royalty, nobility and outstanding world of fantasy.

Character Description:
Let's discuss about some of the main characters or you can say my favourite characters.
Cadis Etrama Di Raizel aka Rai: As I mentioned before, he is the elegant leading character of the series.The one who is known as the Noblesse. A highly noble being, who has the authorization over the nobles. He is NOT the lord but a being who symbolizes the power of nobles. He is both being feared and respected by al other nobles.

Frankenstein: He is Rai's loyal servant. As the name suggests, he is legendary immortal human "Frankenstein: the mad scientist". The thing I like most about him is his pure devotion towards his master and his fearless attitude. Aside of that in personal life he is just a cleaning freak, who doesn't like people to mess with his house. He loves his master so much that, if any thing happens to him, he goes crazy.

Han Shinwoo: The first human being to be friends with Rai at Yeran high school. He is a human who doesn't fear anything. He always helps people
around him. This character is very famous for his extraordinary athletic agility.

Woo Ik-Han: A genius hacker and one of the students of Yeran high. He is also a close friend of Rai.

Seira J. Loyard: She is one of the current leaders of the Lukedonia(The place where nobles live). She is one of the tenants of FRANKESTEIN'S household and a student of Yeran hgh.

Regis K. Landegre: He is one noble of Lukedonia, who stays at Frankestein's house and goes to Yeran high

Muzaka: The former werewolf lord and closest friend of Rai.

Erga Kenesis Di Raskreia: She is the current "Lord of Vampire". She is the strong lady who rules over nobles of Lukedonia.

There are so many characters and arcs, which I can't describe here. Over all I love this series. I am going to continue my reading. Hope this review is helpful to you...