@yannickq
Since this is a literal he said/she said situation, the only defense possible is a character defense by others. That means having a good relationship with others and having them willing step up for the accused. If the accused doesn't have that while the accuser does, you can consider...
@kiero13
The premise of the manga is that Mary is an isekai'd girl who knows the game inside and out. The only person she ever tells the future course of events to is Addie. From other people's perspectives, her actions just happened to have certain consequences. Without knowledge that she is...
@formiga
The manga is fully translated, I'm guessing it was just simply axed. The light novel still continues. The manga ends in the middle of Chapter 7 of Volume 3. The light novel is currently at volume 9 and still being written.
@savris
I'm leaning more towards a harem ending myself. Keep in mind that the setup of the game is that whichever girls he raises points with keeps their affection towards him after they are returned to the normal world. Then again, Japan does have a history of copping out of harem endings...