Black Jack (TV) EP50 - The Brothers that were Separated

Black Jack is hired to act the part of a man's son to operate on his ill older brother. Reluctantly, Black Jack agrees. While waiting to meet with him, the story of the two brothers is told to Black Jack and Pinoko. As a promise to their dying father, the elder brother worked hard to send his younger brother to become a doctor, though he was obviously not cut out for it. Under the pressure, the younger brother ran away and started his own successful company, but his son is revealed to be studying in America to become a doctor. Black Jack refuses to operate immediately, demanding a week to prepare. When the time for the procedure comes, the suspicious elder brother identifies BJ for who he is and stubbornly refuses to be treated, as it is not his nephew. However, Black Jack had already gone and fetched the nephew from New York, and the operation proceeds after the two brothers reconcile.