No, my example scenario involves using Kplug. Say you invited a girl through the option in the journal, the list that Kplug gives you that allows you to see their stats and such. If you remove Kplug, the girl would no longer be invited and would also be removed from your room in both the ability to see her sleeping while on your room menu, where you have options like saving, and from her ability to trigger a wake up scene like she normally would if you had walked home with her. It would be like some sci-fi story where a guy goes back in time to undo an action that sets in motion events that result in a bad outcome just to find out he was the cause, then erasing himself to prevent it. In this example, the event leading up to the bad outcome never happens because the guy erased his own existence, but the fix doesn't happen either because there is no bad outcome to make the guy attempt to fix it. Back to how this applies to the game. You invite a girl through the Kplug journal, save, then remove the thing containing the ability to invite the girl from your room in the first place, which is the Kplug journal function. That erases both your ability to invite from your room and any action taken with that ability so it would be as if the invitation never happened. I got a bit complicated in my explanation, I know, I gave myself a headache writing it. That's about the only effect removing Kplug has, you won't even notice otherwise.