You were at a party in a mansion, a party that was interrupted by a murder; Tetsu Yamazaki, the president of the Yatsubishi Bank was found dead in a locked room with a bullet in his chest. The police, led by Inspector Megure, investigated the crime scene, but have no conclusive evidence to who the murderer is. The ideal suspect would be Takanori Sewa, the owner of the villa, but he is on a wheelchair due to an injured leg, and the rooms were separated by a balcony, was it enough to remove him from the suspects?

Sewa: Could you get serious for a moment, Inspector Megure? How long do you intend to detain all of my guests? We don't have any more time to be part of your fruitless investigation!

Megure: Now, now, sir. The victim was a guest invited to your party, President Yamazaki of Yatsubishi Bank! Please have a little more patience.

Sewa: Are you suggesting that the one responsible is in this room?

The other guests looked at each other