RBD-124 A Man and Two People, in a Closed Room... Fumiko Kanazawa

The representative's wife, Mayumi, went to pick up important documents that had been deposited in the safe deposit box, but she didn't make it in time for closing time. Mayumi asks Hanaoka, who has been working overtime, to let her into the vault, but the two of them are trapped in the vault due to an incident.