If you don't know by now, Okawari is another season of Minami-ke by the studio asread. Okawari means 'second helping' or 'seconds', so i guess you could treat this as a second season, not a remake.

Basically more stories from the daily lives of the three Minami sisters: gentle Haruka, hyperactive Kana, and sarcastic Chiaki.

Voice Actors are staying the same from the original series.