Welcome to the group! Glad to see you're very glad to find it.
Lest you miss out on another community, I should inform you about visual novels (not graphic novels). I figure that since you're into animé, music, writing, reading and D&D, that you might like these (or at least like their potential—many of them are romance genre, but there are several in the fantasy genre).
What kind of music are you into? I don't suppose you do music suitable for video games, do you? Such works well for visual novels, too (i.e. music that loops)—since you don't know how long a person will be reading a certain section.
Take a look at
http://www.renpy.org/ where you can find some free visual novels, and a free engine to make them (they'll post any up you give them to do so with). Be warned, though, that some of the visual novels have adult content (but they say so in the descriptions—so it shouldn't be hard to filter)—though some of the unmarked ones have teen-rated content. Many of the free visual novels aren't what I would call serious projects, though, but some are well-done, and I have yet to try out some.
I haven't tried out more than a few demos of commercial visual novels, but they look interesting. Ren'Py is my favorite engine for making them, though—even if it's pretty new to the visual novel community. It's more visually appealing to me than the others I've seen.