A little bit, yeah, but they're just hints. The annoying thing is all girls having intertwined stories, so hints get really messy - so many games do this, unfortunately.
Corruption unlocks a little bit of side content, if you reach 100 you get an ending. Forget the card, it's a waste of time to try to farm it, it gets destroyed upon use, only removes a little and on top of that, it's apparently bugged. Save yourself some grind and just spam explore business district, refuse all rewards.
I played a bit of the game and got every obtainable scene in game already, so I can tell you most cards (like this one) are just useless, even though the ideas behind them are neat. I optimized my decks to minimize the real time spent grinding. But then again, I don't really want to tell people how to play, figuring out what works and what doesn't was part of the fun for me.