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.Frankly, the hints suck.
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.On an entirely unrelated note, I'd really like to find a way to reduce corruption. I am assuming it's a bad thing.
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.