Seventeen-year-old Shizuka was raised by her mother, and the two share a very close bond. However, the store her mother worked hard to maintain was swindled by the Sakurasei Real Estate Company. Shizuka then pretends to be the new wife of the Sakurasei president, entering the family home while he is away on business to retrieve the deed to her mother's store. In an instant, she becomes "mom" to three boys, with the eldest son, Kanon, being the same age as her...