Awake After Sixty-Five Years - S2.E8

Black Jack finally arrives in England to hear of a man who's been in a coma, unaged, for 65 years. Dr. Stein wants to analyse him to find out why he hasn't aged, thinking it will give them information about eternal youth; but the patient's niece has hired Kiriko to put an end to it. Black Jack operates, but afterwards the patient ages and dies upon finding out that his family had died.