I built a dating plan based on my husband's sleep talk as evidence of infidelity.

The protagonist is a noblewoman who entered into a political marriage. Though she accepted a marriage in name only, she finds herself frustrated by her husband's inability to hide his infidelity. So she comes up with a little prank to teach her husband a lesson. A homemade lunch box on a walk by the lake, a Ferris wheel at a traveling amusement park. She also makes sure not to forget to hear about the latest trends from her former roommate from her alma mater. While flying paper airplanes from the veranda of her home toward the pool in the garden, she repeatedly mentally rehearses for the big day. The calendar has a vivid red circle marked in lipstick on the date of execution. A love story between a heroine who seems worldly but is surprisingly easy to win over, and a hero who loves the heroine so much that he becomes too nervous to say anything. It has a happy ending.