Okay for you I'mma give a little disclaimer.
1: I love the idea behind this comic and the story line but it really does need some work if you want it to have any type of a "metal" feel to it.
That said on to the review.
WRITING:
Okay from here we have
dialogue,
storyline, and because it's trying to have a musician feel to it as well
style.
We'll go with dialogue first.
Dialogue
Okay here is seriously the bread winner of your comic. It's witty and smart and the characters have easily identifiable personality traits. That being said I can find no major problems with it and the only minor problems are that sometimes it can be a bit cliche but for the most part originality abounds from it. Which is a very good thing.
Storyline
Oh man. Well in my opinion there's some work to be done here. It has that "average anime" feel to it. We have a main character with a troubled past who is probably the weakest guy in his group. (Naruto, Yu Yu Hakusho, etc etc...) This is probably the most irritating thing about the comic. I mean having a weak main character or an impossibly strong main character is so over done. But your comic can easily rebound from this. I'm assuming he'll sober up and become a top tier swordsman or that he just holds back all of the time. Right now I must tell you do not go down those routes. They've been done and overdone. Maybe get him to train in a style that utilizes his weaknesses and creates advantages (i.e. drunken fighting or something of the sorts) only then can this story line begin to create originality from an otherwise cliche environment.
Style
Now as far as a "metal feel" goes I can definitely see the beginnings of that genre in Hotaru's attitude and actions. But to be honest it seems more like a regular old fashioned Shonen beat down.
So over all your writing is definitely the strong point of this comic now I have to comment on the art but don't take it too hard most of my crits can be easily overcome.
ART:
Okay there's all kinds of subcategories for art but you know what? #$@% that. I'm just going to give you my personal opinion as it comes to me.
1: My Hair Has Pixel Dandruff...
I love the shadowy style shading you do but the screen tone style is horrible man. I'm sorry but Hotaru's hair screen tone and in general most of the screen tone patterns just don't fit. I strongly suggest either buying different patterns of it, or if you photoshop it in, to Google some new ones. Here are some sites that sell it (although it's just as easy to save it and open in photoshop then work with it from there... hint hint)
bluelinepro ,
psychobob , and I'm sure if you Google it you'll find dozens more.
2: Metal? NO METAL!
The thing that drew me in was the promise of a metal head comic. But alas she's not here matey! It's straight feudal japan Shonen! Come on guys in kimono's and Japanese huts has nothing to do with Metal. You already set the scene but that doesn't mean it can't change a bit. Take some advice from
Re=Play or even
Gravitation for godsakes! Or perhaps take it one step further and youtube some Static-X videos. Or HIM, Kidney Thieves, Cradle of Filth, Black Sabbath, The Darkness, and even go into the sub genres like Nu Metal (Mudvayne, Linkin Park, Taproot, etc.) And check out the industrial areas they use. The style they incorporate. And gradually incorporate it into your comic. Shows like Samurai Shamploo can get away with the Shonen/hip hop feel because they have music to coordinate it but you don't so you gotta go outside the box. Bitch slap the box man! Come up with some new wild and crazy stuff.
3: My Arm Go Bendy...
Anatomy. Perspectives. Take some time to look through other peoples works and work on your own a bit. Sometimes it can be a little off or confusing. But that's okay I highly suggest buying a
Drawing Dummy if you can. They're about 15-25 bucks at any crafts shop.
4: What the Hell Hit Me?
your fight scenes can be a little... erratic. Confusing angles and blur can really throw a reader off. I suggest doing things a bit more clear and simple and working on general anatomy before getting back into the heavier stuff.
Basically I like the comic but it's feel is less Metallica and more... Rave Master as is. Take some time to try and incorporate new ideas and it should come along nicely.
Writing Score: 4.8/5
Art Score: 3.0/5
Beautiful writing but average art bring this baby to a score of...
Sword of Heaven Final Score: 3.9