I created 1 game on game maker and wrote mods for everlasting summer, and also took paid courses on creating games on unity, however, you did not understand the basic idea, your wording says that this game is over, and the same characters will be used in a new game, so if you no longer touch this game then give a logical conclusion to this particular game,
You haven't released a game much less an nsfw game that has thousands of downloads like mine. What I'm trying to explain to you is that any conclusion I would give would be bad because of how short the game is. Id be making up bullshit to end the game when you'll see the same characters you want in the next game.