A funny thing I noticed after the 86.1 Update:
So. I was doing the Manor Quest and ended up interrogating Marin, even manipulating her dress.
Q Q
I somehow swiped a copy of her special flute during this. Like. Whenever I ended up doing her first challenge, she was panicking that I had the flute. I did not even recall getting the flute. Idk if it's intentional for interrogating her back then or if it's a big ol bug. I ended up engaging New Game Plus again afterwards.