I've tried to get this game working for ages, as I knew I got it working in the past.
I really wanted to avoid this method, as I've never had to do it with any other game in the past, as I could use Locale Emulator, but it seems it wont work with unity games, instead mainly for RPG makers.
Seems this is the only working method, does not require PC restart.
Step 1: Install Japanese Language Pack
Step 2: Deactivate Set time Automatically, change time zone to Tokyo
Step 3: Change region to japan, change language to Japanese
Notes:
- Seeing the intro = success.
- You can then change game language to English.
- The orgasm sounds are very loud, so change your PC volume instead of Voice volume (unrelated to game background volume).
- Game voice and animation is actually pretty good, which is why I went through this, gallery seems to be pre-unlocked (don't use any additional "Assembly-CSharp.dll")
- I wish someone would pin this post to first page...