"Family Business of Grandpa" or "Grandpa's Family Business"

Aita is thinking of retiring from his family business soon and closing it down for good. This kind of business doesn't fit the present times, when the old science fiction novels have started to run rampant. A story about an old man who wants to end his long-standing family business in his generation, but is unable to retire due to an excellent pushy grandson and other such circumstances.