Can't wait for it. I know there is a fan translation patch for the Japanese version. Maybe you can contact them, Work together and put the official translated version on itch.io?
https://docs.google.com/spreadsheets/d/1bxkmlZxL5GTC43jnnS56xsnQKNH7tTtA3vyutZqv...
I didn't make it myself so I have no idea what the quality is but I imagine it would make you're job easier. Still take you're time the games you make are supper fun