Planet Ladder - Narushima, Yuri

Kaguya is a quiet orphan who has lived with a Japanese family since she was a little girl. Another boring high school day becomes the adventure of her life when she's mysteriously transported far, far away to a realm of strangers who call her "Princess." Now, Princess Kaguya must uncover both her true identity and the motives behind the battling warlords who want to claim her. The universe is a battlefield, and the key to peace may be in the hands of one very special girl.

(Source: TokyoPop)

Planet Ladder was first published in English by Tokyopop from March 23, 2002 to March 8, 2005. The license was taken over by Digital Manga Publishing, who published the series digitally from August 7, 2012 to September 9, 2013.