I translated some of the Ero Stats UI and another event that occurs later using a combination of my rudimentary Japanese understanding and AI. There are some hundred other UI pieces that would need to be translated which I don't feel like doing atm. Unzip the img.7z inside the main folder where you installed the game and replace the files it says to. If anyone else feels like translating the rest of the UI elements, the font I used is Cambria in Photoshop.
I played the game with a combination of mtool translation to catch anything else that wasn't translated. Overall an alright game for a Japanese RPGM 7.1/10