Hi I'm confused with the ending, it says ending 4 or something for me, does that mean it's over? Are you going to add more content?if so how long until more content is added?
There are actually 22 endings as seen in the (mild spoiler) guide we have posted here: https://steamcommunity.com/app/562350/guides/
You can even check your game CG gallery and probably see that there's still a lot of CG scenes left for you to unlock.