Ayano is known throughout the neighborhood as the perfect wife and mother. However, she has become deeply entangled in a relationship with her only son. What began as a response to her husband's cold demeanor has evolved into a love for her son that now surpasses her feelings for her husband. Behind the daily farewell she sends her husband—"Be careful, dear"—lies her true desire: to have her husband leave quickly so she can be alone with her son. This secret longing burns within her, driving her to crave their private moments together.