Complex sentence: However, by the 1980s, girls and women began to play increasingly important roles in shōnen manga, for example, Toriyama's 1980 "Dr. Slump", whose main character is the mischievous and powerful girl robot Arale Norimaki.
Split into simpler sentences: However, by the 1980s, girls and women began to play increasingly important roles in shōnen manga. For example, Toriyama's 1980 "Dr. Slump", whose main character is the mischievous and powerful girl robot Arale Norimaki.