First of all you have to change your locale to japanese on your computer: http://fuwanovel.net/faq/setting-windows-to-japanese-locale (windows 8 explanation works for windows 10)

How to download and install Majikoi:
1. Download this: http://sukebei.nyaa.se/?page=view&tid=299729 , if you don't have a bittorrent download this: http://www.qbittorrent.org/download.php

2. Get the full translation patch: http://www.mediafire.com/download/44p5yy5x50ng5za/Majikoi_English_Patch.exe

3. Now when you have downloaded both of these, run Majikoi once then close it and install the patch, you run the Majikoi English Patch.exe and install it just as a normal game, just choose the right folder to install it to(the Majikoi game folder).

4. Play!

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How to download and install Majikoi S:
1. Download this: http://sukebei.nyaa.se/?page=view&tid=1773673

2. Download this and put it in the main folder for Majikoi S: https://mega.nz/#!WxwH3TJb!Uq6lRpVodVc3mbEX1A2bMhOyfH3qRWDL8PdJpa70whs press ''replace file in folder'' or similar.

3. Play!

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How to download and install Majikoi A-1:
1. Download this: http://sukebei.nyaa.se/?page=view&tid=2053495

2. Move the mka-1.exe to your まじこいＡ－１ folder if it's not in there already.

3. Play!