Hanayaka Nari, Waga Ichizoku is the newest title for the PSP coming from Otomate (developer Vingt-et-un Systems) sometime in 2010. It’s set in Kyoto during the Taisho era. The heroine Haru grew up poor, and at the beginning of the game, has been hired into the Miyanomori household, a powerful zaibatsu (think Doumyouji’s family in Hana Yori Dango) as a maid. What she doesn’t know is that the head of Miyanomori has just stated that he is stepping down, and will choose a successor from his six sons, sending the whole family into disarray.
The six Miyanomori brothers:

Left: Tadashi, Right: Isami
Tadashi (34 years old): The oldest son, Tadashi always assumed that he’d inherit control of the Miyanomori concern, and he has a tendency to look down on others. He’s in charge of the family’s banking business, and is a workaholic.
Isami (31 years old): Isami has a high rank in the military, and only cares about his country. He thinks that if you’re not increasing the power of Japan, you’re useless.

Left: Shigeru, Right: Susumu
Shigeru (26 years old): As opposed to his older brothers, Shigeru hates rules and being controlled, and loves freedom. Though he’s part of a huge
zaibatsu, apparently he’s been seen performing in the city’s entertainment district.
Susumu (22 years old): As a police officer, he has a strong sense of duty and morals. He strongly respects his brothers and family.

Left: Hiroshi, Right: Masashi
Hiroshi (18 years old): Curious about everything, Hiroshi’s hobby is invention. He’s very friendly and often chats with Haru.
Masashi (16 years old): Masashi is immature and childish – he only does what what he wants to, and dislikes anyone who disobeys him. Sometimes he also shows a cruel side.
Haru is drawn into the sons’ power struggles. The time limit of the game is one year. The gameplay includes setting your schedule of chores (and I believe these affect parameters).

Wow, there is a vivid range between them all, and Haru is only 18,lol.
I couldn’t find any info about who will voice the characters on the homepage, but hopefully they will put that up soon