Black Butler is written by Yana Toboso.
Black Jack is written by Osamu Tezuka.
Cross Game is written by Mitsuru Yasuhiko.
Mobile Suit Gundam: The Origin is written by Yoshikazu Yasuhiko.
La Corda D'Oro is written by Yuki Kure.
The Prince of Tennis is written by Takeshi Konomi.
07 Ghost is written by Yuki Amemiya.
No.6 is written by Atsuko Asano.
Ouran High School Host Club is written by Bisco Hatori.
Blue Exorcist is written and illustrated by Kazue Kato.
Princess Tutu is written by Mizuo Shinonome.
Vampire Knight is written by Matsuri Hino.
Meine Liebe Wieder is written by Hiroyuki Kawasaki.
Here is some of the front covers of the Manga Books.
Black Butler Front Cover
Ouran High School Host Club
D.Gray-Man Front Cover 
The Prince of Tennis Front Cover
07- Ghost Front CoverI have read some Black Butler I only have 8 books of them and I don't know how many there is going to be of this manga book. Also I have a couple of Blue Exorcist manga books and I really don't know how many book. I have got all the Death Note Manga Books and the special book to show how to read. If you have an iPhone you can download manga apps or go on a website that is called KissManga you only register to it and you can put your favourite manga's in a bookmark.
