If I remember correctly, there was an expansion or DLC for this game's original release. Am I correct? If I am, does anyone know the name, and if there are any plans to release it for the English translation?

Hi, you are remembering correctly! The original game had a number of DLC updates that added things like the Harem Route and Easy Mode. No need to worry or wait though, our release includes all these extras as unlockable content. Can you figure out how to find them? The Special Hints may help a bit (pssst... a little secret, we also might just be releasing something this week to give you all the hints and tips you could ever need).