Uchuujin Tanaka Tarou

The series' protagonist is Takashi Horimachi, a fifth grader at "Anytown" Elementary School. A transfer student named Taro Tanaka enters Takashi's class. Taro Tanaka turns out to be a space alien. Takashi becomes obsessed with trying to figure out the origins of Taro. Note: Won the Shogakukan Manga Award for Children's Manga in 2000.