You can leave any suggestions here in the Itch.io comment section. About the translation, check out if there is already a translation for your language, and if there is, contact the people in charge of it to see what you can do to help them
If there is none, check out the Readme.txt from the folder located in futakenvalley-win\Game_Data\StreamingAssets\language and once you've made the translated text file, you can upload it on any service you want and send it here so Mofu can add it in the next update
Also about your ideas, it doesn't hurt to ask. Keep in mind that Mofu has all the rights in the world to refuse any suggestion but doesn't mean you can't give your opinion. And don't feel bad if your suggestion is not accepted, it happens! 🤗
