Doraemon (1979)

Werewolf Cream (1x97)

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Doraemon and Nobita argue who is scarier, a werewolf or mom. Doraemon takes out the werewolf cream to transform himself to prove a point. Mom finds the cream and uses it before heading out to an old friend's house. Doraemon, worried, tags along to prevent mom from transforming whenever she looks at a round object.