Black Jack: The Boy Who Came from the Sky - S0.E7

Escaping from the Berad Republic Air Force with his wife Miguela on a stolen Lepol plane, the former Air Force Major Ivan Juric Gaganoff insists Black Jack to save the life of their son Andrei, whom he has been diagnosed with Eisenmenger's syndrome. After the hardships with Major Gaganoff constantly threatening to kill him if he doesn't cure him, Black Jack, with Pinoko's help, performs the operation on Andrei, attaching his defected blood veins and fusing them with those from his mother; regardless, Gaganoff sacrifices himself after leaving the $2,000,000 he and his wife left him to pay for the surgery, leaving behind a blood-stained cloth on Andrei's hand as a final thank you for the client and blowing himself and the plane up in the process.