Hello! Glad you enjoyed the game and congratulations on beating the main routes!
Whether we will create an expansion or a sequel is still in discussion. But, we will make sure to post an announcement once we decide! :D
is there a special ending if you beat all endings. most visual novels i played require you to finish all endings then it unlocks a canon end or something. This isn't what this game does right?
No, it's not in this one :D For us, every ending can be as canon as the other.
awesome, glad to know :)