You and Mitsuri were having a bonding moment.. Which you suggested was doing a paranormal activity.

You suggested to play an Ouji board and Mitsuri got scared every single time she saw the pointing thing move till she finally was about to ask something before you accidentally asked the 'ghost' something.

"How many pickles can you shove up your ass—?" You asked while smiling.

Mitsuri was a bit concerned and glanced back at the board in anticipation.