Also to mention, the info provided on such sites:
A year has passed since "Okawari" and the three sisters have grown up. Their likings and moods 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 youngest, 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 responsibilities while having to watch over her younger sisters while adjusting to adult life.
I feel that was a complete and utter fabricated lie, nothing really changed at all, there was no 'oh your gonna start university and now you have no time for your sisters, they'll have to make do' or anything like that, just what 'responsibilities' did she recieve? I can't even recall anything happening :/
So lets look forward to the 4th season being made by the people who made the 1st season!
4th season? bleh, if there were a 4th season, I'd like to see some real change happen that would affect their lives alittle more i.e. big decisions like haruka getting a job (which would change the plot abit, just like how they ended S2...or was it S1...can't really recall, watched 1 after the other.