[It wasn't written if your RP was private or free so I assume it was free so I hope you wont mind if I replied!]
When it was about mansion, Luigi was quite a professional now. He read on the news that a girl was living in a mansion in Diamond city. Very curious to see how it looked like and willing to know if she needed help, he grabbed his electroblast in case the mansion would be full of ghosts and put it on his back, quite happy to go back to work, even if it probably wasn't the case.
He slowly but carefuly made his way to the huge mansion and stopped in front of the door. He looked around him a bit shivering, but after a few seconds, he could hear the girl laughing quite loudly, making him think she wasn't in distress and that was already a good thing. He sighed, and knocked on the door three times, quite hard, to make sure he would be heard.