Okay, I have translated this.
Everything is translated, including the room nameplate at the beginning. The start menu and options text are now in English only because the original English subtitle was too small. I also modified the game to indicate who is speaking with color in the ending dialogues and swapped the Enter/Space functionality to the Hide Text/Advance Text.
To apply it, download the base game from elsewhere and unpack the translation's .zip file into the unpacked game directory with overwriting.