Mein Ritter ~Watashi no Kishi~

Dragon Fist follows the exploits of a young dragon that is exiled from his clan after committing a terrible crime. This particular manga has been published one volume per year for the past 12 years, so the artistic style changes rather drastically as you read further on. It's a kind of chronicle of Katayama Shuu's growth as an artist.

Sakumiya Minagi and his adopted older brother Amou live in a family which protects the katana "Kiriyasha" and "Hagasumi." Kiriyasha has been known to be attracted to blood and the only thing that can stop it is the sword "Hagasumi." After the death of Minagi's father, strange people start to appear around Minagi, some attacking him and others protecting him. Soon after, his brother Amou breaks the seal of the Kiriyasha and leaves the Sakumiya house after killing his mother. Minagi now has to fight his brother with the Hagasumi and seal the Kiriyasha once again.

Andrea Marcos is a young man, looking for someone to translate a mysterious letter left to him by his late mother. His search leads him to viscount Theodore, a prodigious but hot-tempered and grouchy young man, fluent in 8 languages and a popular author of supernatural stories. To make things more interesting, not only does the viscount not believe in anything paranormal but the letter was apparently delivered to Andrea by fairies…?!