Taste is Inherited Over Generations
Kana decides to help her sister become the Great Bancho once more by making the Kana army, but Chiaki on the other hand couldn't help because she considered her friends useless. In the end of the episode they find out Haruka was just refusing a phone call to become class rep.
Aired 14/01/2008EP 2 - Taste is Inherited Over Generations
2008
Minami-ke: Okawari
A new year has started, and the three Minami sisters—Haruka, Kana, and Chiaki—are still living together without adult supervision. As the seasons pass, the girls continue to make friends and find new interests. No matter where they are or who they hang out with, the sisters' time remains ever vibrant.
(Source: MAL Rewrite)