Ero♥Märchen: Akazukin-chan

This sensuous take on Red Riding Hood sees girl and wolf switch roles. Marie has a "cute face," but comes from a family of wanted criminals, and isn't afraid to shoot to kill. But when a good-natured wolf with unusual powers shows up...

Note: This was first released in a mobile reading app called ComiNavi with 12 chapters, 10 of them were released as four chapters in the only two tankobons that got distributed. The last two got released as a single chapter in Love x Pink Magazine vol 10.