It seems like a fun game, but I've played through a few times now and I can't figure out how to get any ending other than D.
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Thanks for playing to uncover the other endings you need to look out for the glitches a tip when you get to the 6th screen start clicking on Helen the girl on the left the moment you see her glitch out and the figure appear that means you have activated the glitches. if you click on any of the other 2 after that it should set you up for a different ending. If Memory serves me right see helens glitch then clicked on sharif then sally and that should give you The A Rank