Eldest son Teppei (万俵 鉄平) is the managing director of Hanshin Steelworks (阪神特殊製鋼, fictional version of Sanyo Special Steel Co., Ltd.).
The ambitious Teppei seeks to expand operations of his company, and goes to his father to see if he can secure a loan.
But the Minister of Finance seeks the merger of smaller Japanese banks to fend off foreign competition.
Daisuke must decide whether to protect his son's interest in manufacturing or to ensure the survival of the bank that he controls.
Teppei's uncanny resemblance to Keisuke, and his blood type proves to Daisuke that he was, indeed, his half-brother.
Daisuke notices that they had made a mistake in the certificate, he states that they had Teppei's blood type wrong.
[7] Karei-naru Ichizoku aired on KIKU-TV in Hawaii on September 23, 2007 to November 25, 2007 under the name The Grand Family.