Shinobi no Onna

[From ShoujoMagic]:

Another collection of short stories by Kayono involving strange worlds.

1) Secretly a Woman (Shinobi no Onna) -
By day she's an ambiguous high school girl, but by night...she transforms into a super-hot male host (gigolo)! Yes, Yuka is "Secretly a Woman," but then a woman named Renka comes to the host club and steals both her body and her heart...!?

2) Butterfly Night -
From Kayono's "Arabian Nights" series. Princess Sheherazade is sent to marry a vile sultan in order to keep him from conquering her father's kingdom, but she's kidnapped en route by the masked Devil Mariam, who will do what it takes to exact revenge against the sultan -- including stealing the virginity of the sultan's pretty bride-to-be...! Published in Chokotto Abunai Koimonogatari.

3) Lovers in the Tower that Touches Heaven -
Ruby, Baghdad's top dancer, is waiting for Jank to return home. When he does, he tells her that he only escaped death by promising Garuda, a carnivorous devil living in the desert, that he could have Ruby for one week. What will happen to Ruby?!