After her grandfather's death, Mikura chose to continue their island express courier service. With her seaplane and her adventurous cat, Endeavor, she lives life as she chooses. Soon, Mikura becomes very interested in a mysterious island that seems to move around, according to local legend. After some extensive effort to determine the island's whereabouts, she manages to get a brief glimpse of it from the sky. Now that she knows it's real, she's determined to find the island again, no matter what it takes!
(Source: MangaHelpers)

Mariel Imari is a private detective trying to become a first-rate detective to be able inherit her late father's estate. By some strange reason the mysterious thief Vecchio is taking an interest in her. If that's not enough her old friends at Interpol and her siblings makes life more troubling for her.

Adventure!
A misty day at the waterfront and further meanderings of a nudist detective.

Loose spinoff of Forget-me-not that can be read without prior knowledge of the franchise.

China is a lovely young woman, the kind of beauty people write songs about or name stars after. She`s as spectacular as Fourth-of-July fireworks and as striking as lightning, and Jim Floyd -- the technical assistant to the crazed Professor Breckenridge -- just got struck! In fact, he`d give China the moon if he could. Odd thing is, he can. So that`s just what he intends to do.
(Null Scanlation)