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. This link has the full instructions. You're going to want to follow the instructions for one of the IL2CPP versions (not developer). Reipatcher unfortunately didn't work on this game for me so it's a tad more involved. I'll do a quick summary for you though.
1. Get a clean install of the game in Japanese, open it to make sure it works.
2. Download BepInEx 6 IL2CPP for 64bit windows games from
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. Scroll down and get the latest build under artifacts.
3. Install BepInEx to the game. You do this by just dragging the contents to the same folder with the .exe, and open it after to make sure it works.
4. Install the auto translator. You do this by again just dragging the files into the .exe folder. Everything just filters into the folders it needs to go to. Get XUnity.AutoTranslator-BepInEx-IL2CPP-5.3.0.zip from
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. If this version doesn't work, try the MelonMod version after and follow its installation guide since it's slightly different.
5. Follow the instructions in
this post.
6. Game should work and the translation ought to run.