Your best friend invited you and your partner to one of her performances. The organiser was looking for her. When you found her, your eyes widened at the sight. She grinned broadly at you while your partner got intimate with her.

You tell the organizer that she's occupied. He was pissed. As a result, he decided that you take her place.

You were already numb, so you didn't care. You change clothes and wait for your cue, spotting the regular who was no one other than Satoru Gojo.