Zaibatsu fukushu - Ani-yome ni natta moto-yome -

Born as the child of a mistress, Yukiya Ise, the second son of the Ise family, was discriminated his whole life and was raised by his relatives. He thought he finally found his happiness when he marries Erika Sato, the woman of his dreams. However, Erika is a woman who will do anything to get what she wants. To get the Ise conglomerate, she ends up getting pregnant with Yukiya's elder brother Masayuki's child and wants to remarry him. Being treated poorly by his family and betrayed by his beloved wife, Yukiya has hit rock bottom and vows to take revenge on his family.