This is basically the black swordsman arc from berserk except gatsu is black and punches people head away instead of cutting them in half. If you like the black swordsman arc you will like this. If you don't like the black swordsman arc you will not like this. Spoiler is: it seems like it was supposed to be an introduction to a much longer story (much like the black swordsman arc) but is still very enjoyable. Really nothing much to say about it, if you have time to read longer reviews you would spend that time better reading the first chapter.