You meet Kirika at the appointed time and place and hand her her ticket. "Way in the back, okay."
You buy some snacks to share and go find your seats. Part-way into the concert, Kirika gets up to go to the restroom. A fight breaks out behind you, and you wind up getting stabbed. By the time she comes back from the restroom, you're dead, people are being arrested, and she is sad and goes home, thinking Mireille was right. Bet you didn't think J-pop concerts in France were so violent.