Garasu no Ie

When Tamaki Rei was a child, her parents died in an airplane accident in France. She grew up in a difficult environment, and money was always hard to come by. Now in her thirties, Rei visits the accident site where her parents died for the first time in twenty-three years. There she meets Shibusawa Kazunari who lost his wife in the same accident. Kazunari is a budget director for the Ministry of Finance. They fall in love and get married.
Kazunari has two sons now grown. His first son, Hitoshi, follows in his footsteps and works in the Ministry of Finance. His second son, Kenji, graduated from law school and is now preparing for the bar exam. Because of Rei, who tries to get close to Hitoshi and Kenji, and her beautiful appearance, the Shibusawa family begins to have friction. Hitoshi is attracted to Rei. Rei begins to realize that what she wants from Kazunari is not love, but her late father's shadow.
(Source: AsianWiki)