Wow dude, this really worked, but because I'm dumb I couldn't understand after reading and reading this like 1 hour hehe, I will try to simplify what you meant in case someone is having troubles as well:
1: Download "bundle of the files" and extract it anywhere
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2: Download his rar (RJ01172504.My_Soaking_Wet_Adventure.v1.00amMTL)
3: Extract the "BepInEx-Unity.IL2CPP-win-x64-6.0.0-be.679+49775dc" rar from "bundle of the files" directly in the game files (don't use "extract in "BepInEx-Unity.IL2CPP-win-x64-6.0.0-be.679+49775dc", just extract them there directly in them
4: Run the game, wait until the extracted files do their job and then exit the game
5: Extract the "XUnity.AutoTranslator-BepInEx-IL2CPP-5.3.0" rar in the game files directly (without creating a folder first for the files as well)
5: Run the game, wait until the extracted files do their job and the game will be translated... but our kind guy did a better translation of the game, so
6: Extract the "RJ01172504.My_Soaking_Wet_Adventure.v1.00amMTL" rar in the game files, this will replace the bad translation for our friend one
Hope this helps