Maki and I have been married for 15 years. Due to being busy with work, I leave most of the household chores to Maki. I thought I needed to do something to make it up to my wife, so I came up with the idea of giving her a day off each month. I will book a room at a hotel in downtown Tokyo for Maki, so she can relax comfortably there. Maki is very happy and often sends me pictures taken at the hotel. One time, since I didn't see Maki send any photos, I reminded her. Maki said she was busy, and I wondered what she could be busy with at the hotel? A little while later, I received a photo that Maki had taken, but there was a man's tie appearing in that photo! From that moment, my suspicion grew increasingly. Determined to find an answer, I decided to carry out the plan on our 15th wedding anniversary. I booked a luxury room for Maki while pretending I had to go on a business trip, then secretly escaped to monitor everything happening...