A translation project was started here for Mizuryu Kei's visual novel, the original thread has been archived since.
I make a new one as I have made a patch which could make things easier for anyone willing to translate/edit/mod the game in any way.
Download link : https://mega.nz/#!Jg9zkDSR!70DMc-DbFRZWMGgNfjyleUxagomosBeqk1SD6_-ILjI
To install you just extract in the game folder and apply the patch.
The first time you launch the game, this will dump all the image and text files of the game inside a "modding" folder. This is pretty long as there are around 577MB of files to be extracted, so it can take a few minutes depending on your hard drive. It is done at the launch of the game and it can look like the game froze, but just hold on, and once it is complete, the game launches normally and you have all the files in "modding" ready to be modded.
After that, you can modify the script files (all .tjs and .ks which are text files) inside the modding directory, and the game will use those instead of the original ones. Though if you make any changes, you will probably need to relaunch the game to see them.