Since the storytelling has been taken care of, I'd like to comment on the art! ^^
-First off: Your composition is SOLID. Definitely looks like the work of an artist who's done their research, even if they can't draw everything quite that well yet. I respect that.
-I like the character designs. Even without reading the story, I can tell who's who in every panel, which is important in a B&W comic.
-I think the "chibi panels" are fine. In general, people tend to judge them too harshly, so if you like them don't let anyone guilt you into not using them anymore. Just make sure that they really are there to lighten the mood, or to show when the mood has gotten lighter.
-Your anatomy is mostly pretty good. From the waist up, you're golden, but I suggest you practice drawing people standing and walking, focusing on their hips and legs. I think just that little bit of practice could easily improve the professionalism of the comic's look.
Hope I could help! Ciao~