Marina Watanabe is a Japanese actress, former idol, and voice actor. Her first experience with voice acting was providing the Japanese dub voice for the character Lady in the 2000 film Thomas and the Magic Railroad. She later took on a voice role in anime, playing Sera in the 2015 animated film Anata o Zutto Aishiteru. This film, also known as The Adventures of Tyrano Boy, is an adaptation of Tatsuya Miyanishi's children's book series about dinosaurs, and Watanabe voiced the character of Sera, the mother of the protagonist, Toron.