Fushigi no Kuni no Miyuki-chan

There are many worlds in the universe outside of our own, connected by doors that are hidden to the eye. But if you chance upon those doors, you can be transported to a place where supple beauties reign supreme and all of your fantasies come alive. Should you pass through the doorways, be most careful, for the creatures you will meet can be as dangerous as they are beautiful. Many would die for a glimpse at those worlds - Miyuki would do anything to have them go away.

(Source: VIZ Media)