Black Butler is a favorit komik jepang of mine, I personally think it's better than the anime, while the anime is good, it's just doesn't compare to the manga.
Let's see.... Death Note Black Butler. (Kuroshitsuji) Fairy Tale It's not my fault that I'm not popular! Shingeki no kyojin ( Attack on titan ) Sket Dance! And Hellsing.
I have a number of favorit komik jepang Furuba is my number one favorite!,but Yotsuba&!,Death Note,Ouran,Fullmetal Alchemist and Yu-Gi-Oh! all come close!
Mine are: Skep Beat Vampire Knight Kamisama Hajimemashita The One Black Bird Leopard hakusho 1/2 prince Father Complex The Summit Zetsuai Wild Rose Calling Oniichan Control Super Lovers Switch girl Koi nante shinai Forbidden kiss Fallen Angels And much more! XD
Naruto Bleach Detective Conan Doraemon Mint-na Bokura SGC! XX me! Koya's Love Hell Girl Prince and Hero Kami Kami Kaeshi Maid Sama! Arisa Animal Official Kaitaikun! Rockin' Heaven And many more...