I just found out that Trinity Blood was based on the novel written by Yoshida Sunao.
According to Wikipedia, Yoshida Sunao passed away at the age of 34 in 2004. I'm not sure how many volumes of novel he managed to publish, but it was confirmed that it was incomplete. The story was finished by Yoshida's friend - Yasui Kentaro.
This reminded me of J. R. R. Tolkien. He passed away before he could finish writing Lord Of The Ring. The reason why the story was able to complete was because of his drafts. I wonder if that's how Yoshida Sunao's work was completed. Since Yasui and Yoshida were both novelists, they probably exchange ideas with each another, so Yasui probably knew about the story better than anyone else.
According to Wikipedia, the novel, manga and anime differ from one another.
I have only completed watching the anime. Since this story itself has many fighting scenes, the visual is just spectacular. The action, the colours, the customes, the characters, the setting of places, such as buildings, they are a feast to the eyes. I mentioned characters, because you won't be able to see how the characters look like in a novel, even though the face of the characters were just drawn. At least that gives you something to remember, rather just a sea of words and your imaginations that you may not be sure of. The audio is just as great too. I like Esther's voice. Though she's somewhat considered as a main character, she only made her first appearance a few episodes later. And after she finally appeared, she disappeared for quite a few episodes and only appeared (sometimes it seemed for the sake of appearing) again much later. Dandelion tend to be more violent and act rushly, but he's not unkind. He's just... rough. Apparently, he was in Prison for quite a long period of time before returning to the Ax. The Pope... I wanna slap him when he first made his appearance. He's indecisive and often sandwiched in between his sister's and brother's decision in the course of actions to be taken. The Pope only followed his brother's decisions because his brother yelled at him. His brother... I wish a thousand death upon him. He's a harsh man who always think strength and power are the only way to make people listen, and always opposing his sister's - Caterina - idea of Co-existence between the 2 different kinds. I think I can only remember the names of characters whom I like. =_=" The anime didn't give a solid, well-concluded ending that the baddies really died and the righteous or justice has win the day. It just ended off showing that the fight must go on, in order to achieve peace so that Methuselahs and humans can co-exist. Both parties have lots of misunderstanding. Also, with the Orden <- that's the baddie, (I can't really spell the full name. =_="') in the middle stirring up things and making things difficult, if not worse, that's why the fight must go on.
According to Wikipedia, there are now 8 manga volumes. However, the manga rental shop I went to, the boss told me that the story seemed to stop at Volume 7 and it has stopped for quite somet time. If that's the case, Volume 8 is probably the latest volume published, probably recently this year. Actually I can't seemed to find anything on Volume 8 of Trinity Blood.
Once again, according to Wikipedia,�the Japanese novels were translated into Chinese, Korean and English. The titles of the translated English novels were different from the original Japanese novels, while the Korean and Chinese translated versions remained faithfully the same. I wonder if this could mean there may be a deviation in the English translated novel from the original Japanese novels. I would love to read the novel, however I would also love to stick closely to the original as much as possible. Deviation sometimes I feel would lose some of the essence of the story.