Hikari, working in sales, was uncertain if the job suited her. One day, the company president kindly encouraged her. He was a strong, respected leader, and Hikari gradually developed romantic feelings for him. However, he was already married—this man was her future father-in-law, Tetsu. Hikari accepted a marriage proposal from Tetsu's son, Junshi, choosing to marry him simply to stay close to Tetsu. Eventually, the time came to confess her true feelings to Tetsu. But after discovering Junshi's infidelity, something inside Hikari snapped.