Today is my wife Minami's wedding anniversary. After attending the alumni meeting together, I planned to hold the celebration at home, but I prioritized a drinking party with my business partner, and I couldn't even talk to Minami since the morning... I went out drinking on the night Minami went to the alumni meeting, came back early to prepare for the celebration, and tried to contact Minami but there was no response. When I contacted the attendees of the alumni meeting, I heard that Minami Sato and Chidori disappeared before the second party, and I was very worried.