I have just finished to read the manga "Lost Universe" by Hajime Kanzaka, the same mangaka of "Slayers".
Kain Blueriver and Mileniam Feria Nocturne (Milly) meet themselves during a mission. After she loses her job, Milly decides to get in the Sword Breaker, an ancient space sgip with phenomenal powers, but only Canal, the trip computer, knows the misteries arownd this jewel of science and tecnology.
The manga is composed by only 6 volumes without missing anything. It's a nice commedy, with an, all in all, happy ending. I liked it so much that I didn't realized I was reading the last pages. It doesn't let you go, keeping inside it during all the time.
Have a nice week!