
Professor Risenberg in Young Black Jack
Episode 7
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He performs the surgery as everyone was watching and he was apparently feeling strong. Kuroo Hazama and Maiko helped him for surgery in Johnny's arm and he tell Kuroo Hazama to good job.
Episode 8
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He appeared with Yabu, and he tells Yabu the research that he has. He have a research that he tries very hard. But his research has revealed in past. He doesn't understands that he thinks he is also a villain, but he feels worried.