Mushi Production submitted the anime adaptation to NBC Enterprises that was declined because its executives felt the series theme could be interpreted as "sex switch." Animator Joe Oriolo, however, purchased the anime's distribution rights, and along with Burt Hecht dubbed its episodes into English. In 1972, after a limited release under the title "Princess Knight", Oriolo and Hecht edited three episodes and made it into a film titled "Choppy and the Princess" that was licensed to independent television in the United States and was syndicated in the 1970s and 1980s. In October 2012, Nozomi Entertainment, a Right Stuf's publishing division, acquired its distribution's rights for North America. Featuring an English-language and a Spanish-language dub, it used the edited and cut version broadcast in the 1970s and 1980s. The first part was released on August 20, 2013 while the second one was published on October 22, 2013.