Try these step if you can't unzip the file. 

1. Use force recheck command in your bittorrent client to check if any download error occur.

2. The archive is using rar format 5.0 , Winrar 5.x or 7zip is required to extract it

3. You may need to change name encoding in Winrar(5.40 and up) to successfully extract the files with JP names.
Winrar > Options > Name Encoding > Select Japanese

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How to run Japanese H-Games and Application.

1. Make sure it's folder name is in English.

2. Regarding the error: "loading error, failed to load: ......"
Windows has a maximum length that a file / directory path can be.
Please shorten folder names and / or move game's folder somewhere 
with a shorter file path. (e.g. Directly into the C:/ drive)

3. If you can't run the game normally.

- Try using Locale Emulator or Ntlea to run the application.
http://pooi.moe/Locale-Emulator/
https://archive.codeplex.com/?p=ntlea

- Or change your system locale to Japanese. Then run the game directly.
http://www.dlsite.com/ecchi-eng/faq/detail/=/type/user/mid/7/did/296

4. If you get an error "RGSS****.dll could not be found"
http://www.dlsite.com/eng/faq/detail/=/type/user/mid/7/did/290

5. If you have a plan to play many Japanese application or h-games. We also recommend to change your system locale to Japanese permanently or you might get some application error from time to time.

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Hentai Anime

If you got black screen with only sound playing.
You need to update codec pack
https://www.codecguide.com/download_kl.htm

Or change to other player. We recommended PotPlayer
https://potplayer.daum.net/
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