 Of the studio's productions not based on Western literature, the most popular is undoubtedly "Chibi Maruko-chan" (1990), based on the popular manga by Momoko Sakura.At its peak, this slice-of-life anime about an unusually intelligent elementary-school-aged girl and her family and friends managed an audience rating of nearly 40%, making it one of the highest-rated anime series ever (and the highest-rated anime program in Japanese history at the time).It is a department of Nippon Animation that had a partnership with famous toy company Takara on some anime.