Turnabout! Natose Cometh
Yume goes missing from the Kuonji household due to an argument with her sister Shinra. Ren and Natose go out to search for her, and more is revealed about Natose's past and the reason for her affection to Ren and Yume. It turns out that Shinra actually cares for Yume the most when she returns home, and it is revealed that the Kuonji siblings lost their parents since a young age. Shinra had to be strong in order to keep her family together, which caused her apparent emotionless state as a child.
Aired 09/03/2008EP 10 - Turnabout! Natose Cometh
Kimi ga Aruji de Shitsuji ga Ore de
Based On a Visual Novel developed by Minato Soft.
Due to family troubles, Ren Uesugi and his sister, Mihato, leave their home. They end up moving to the city but find themselves with a lack of money. Somehow they are able to find work in the form of the Kuonji family's mansion, being employed as servants to the three sisters of the Kuonji family: Shinra, Miyu, and Yume. Being a servant also associates Ren with the mansion's additional servants and the Kuonji sisters' friends.
(Source: Wikipedia)