Keina Takeoka works for a home building company and is recognized by her boss, Matsunami, as the most successful woman in the company. She thought her relationship with her live-in boyfriend was going well, but one day she comes home to find him cheating on her. Impulsively, she ran out of the house, but with nowhere to go, she was at her wit's end in the rain... when Matsunami-san happened to pass by and said, "Come to my house!"