Keiko got married at work five years ago with her husband and was living a happy married life. One day, her husband talked about a promotion in her local area, and she was forced to transfer and let go of her owner's house. The two recommend buying a house to their former teacher and boss, Matsumoto, and give them a duplicate key. Matsumoto's unreasonable feelings for Keiko and his selfish hatred for Jun, who was tied to such Keiko, tear apart the strong bond of love between the two!
