あしたがあるから(1991)

Office clerk Reiko is thrilled when her coworker boyfriend, Kenta, proposes marriage. She is excited to quit work and begin married life, but is suddenly promoted to chief of a new department. Why is the president so interested in this low-level employee? Meanwhile, the president's daughter has set her sights on Kenta. A tangled web of love has begun to be woven.