This english translated version was released by the author of this series,since he's japanese and english isn't his native language the grammar is not perfect,but nonetheless this work is very enjoyable.
This doujinshi is part of a series of works that function as prologues to a much larger series (2 books of 200 pages each and several chapters,all on sale on Dlsite),they can be found on the artist's pixiv where you can read them free of charge,also a high resolution version of this prologue doujinshi has been added to the 1st book of the main doujin work,which is of course in high resolution as well. http://www.pixiv.net/member.php?id=775310 Also consider buying the main doujin on sale on Dlsite(link below) to support the artist,unlike the low resolution previw pages of this prologue,each page of the doujin has a resoltion of 1536x2048,the books and chapters that make up this doujin series story are extremely well done and feature some of the best fighting sequences ever seen in a doujin manga.
@Kenichi02 Did you read what i wrote in the gallery description? These translations are made by the author of the original work and he's not exactly fluent in english,but since he still went through the trouble of making this translation you could be a bit more appreciative of his efforts.