Saki Hiwatari(日渡 早紀Hiwatari Saki, born July 5, 1961) is a Japanese shōjo manga artist. Her first work, Mahōtsukai wa Shitteriu (I Know a Magician) was published in the weekly shōjo anthology Hana to Yume (Flowers and Dreams) in 1982. Hiwatari is probably most well known for Please Save My Earth, a 21-volume series concerning several alien scientists who are reincarnated as high school students in modern Tokyo. Currently only two of her manga series are available in English: Please Save My Earth and Tower of the Future.