This guide will show you how to install the AutoTranslator plugin made by bbepis [github.com]
1) Download the latest 64bit release of BepInEx: https://github.com/BepInEx/BepInEx/releases
2) Download the latest auto translate plugin release: https://github.com/bbepis/XUnity.AutoTranslator/releases
3) Paste contents into the root of your V-Katsu folder
4) Launch game and it should work


OLD GUIDE BELOW
1): Backup the game
2): Download "BepInEx_x64_v4.1.zip" from here [github.com]
3): Extract the contents of "BepInEx_x64_v4.1.zip" into the v_katsu root folder. Should look like this [i.imgur.com]
4): Run the game once then close it
5): Download "XUnity.AutoTranslator-BepIn-2.14.0.zip" from here [github.com]
6): Extract "XUnity.AutoTranslator-BepIn-2.14.0.zip" into the v_katsu root. The contents of the "BepInEx" folder in the v_katsu root direcrotry should look like this [i.imgur.com]
7): Run the game like normal and 98% of the game should now be translated. Enjoy :3