From Aerandria Scans:

The time is set during the Industrialization Age in Meiji. The main character Chitose works as a maid in Kuze, one of the most prestigious households of the time. One day, Lan, a nephew of the master came back from England to be his stepson. Eventually Lan and Chitose’s feelings begin to develop. What will happen with the secret affair between the honey-haired Lan and the maid Chitose?

Note: Hachimitsu no Hana is on hiatus. The last release was in June 2009. The mangaka has been concentrating on her other series, Kaizoku to Ningyo.

From Aerandria Scans:

During the time when the world is full of barren lands and big ships sail out to the vast oceans, a very rare type of sub-human--mermaid--was born. Normally, they have white hair, but only in water does the color change. Among the aristocrats, they are traded for large sums of money. Hisui is a merman with scarlet hair, and he's kept by a lord. However, as he's stolen away by the pirate Ikuta and gains freedom, they start their journey together!

From Yuuki Megane Scans:

Shuuhei, Harumi and Daiki start their second year of high school with an absolute goal: Getting at least two new members for their swimming club to keep its position as a club. This is the daily struggles and shenanigans of a high-school boys' swimming club!