Complex sentence: The meta-series introduces Usagi Tsukino as a schoolgirl living in 20th-century Tokyo, a well-meaning but underachieving who prefers the life of a normal teenage Earth girl.
Split into simpler sentences: The meta-series introduces Usagi Tsukino as a schoolgirl living in 20th-century Tokyo. It initially depicts her as a well-intentioned, but underachieving who prefers the life of a normal teenage Earth girl.