Kumada-sensei is the nurse of the elementary school attend by Chiaki and her classmates. She enjoys teasing Chiaki and is desperate for a boyfriend, due to her relatively high age (being an unmarried female beyond a certain age in Japan carries stigma).

A year has passed since "Okawari" and the 3 sisters have grown up. Their likings and mods are almost the same, Haruka the older sister is a love-giving mother to the younger sisters, but she's also a discipline follower, Kana the middle one leaves everything to the last possible moment and always gives trouble to this trio, and Chiaki the little one is the calculating and manipulating one, she likes to be admired and loved by Haruka and always gives trouble to the less blessed Kana. An unbalanced family, but besides of that they love each other with their whole heart. This family's daily life is as funny as ever, trouble and love is always present, now its time to see if they'll survive this age change since Haruka is now a Young adult and she has even more responsabilities while having to watch over the younger while integrating to the adult life.
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(Source: Anime News Network)

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Minami-ke is a manga following three sisters, Haruka, Kana, and Chiaki in their lives at home and school. It's a funny manga that depicts how these characters interact with each other and their classmates. It's a manga about ordinary girls and their ordinary adventures told in an extraordinary manner.
