Mamoru is a transfer student into [Yuu's](https://anilist.co/character/12919/Yuu-Morisawa) class. He is originally from Hokkaido and prefers nature to the city. He is initially very rude, but quickly becomes friends with Yuu due his interest in [Posi](https://anilist.co/character/332272/Posi) and [Nega.](https://anilist.co/character/332273/Nega) 

Creamy Mami is about a young girl, Yuu, who after seeing a spaceship is given the power to use magic for one year. She is also given 2 cats, Poji and Nega, to watch over and guide her. Using her magic powers to transform into the idol Creamy Mami, Yuu must work hard at acting, singing, helping her parents at their crepe shop, fighting aliens and bad guys, going to school, plus try to get the affections of her childhood friend Toshio.<br><br>
(Source: AnimeNewsNetwork)

She retired in May 1985 when her health suddenly became worse and was subsequently replaced by other people for her roles.

Mamoru Hidaka