Typical harem anime, guy shows up in a place (in this case a dojo) that for the most part is filled with girls and they all end up falling for him.
Yoichi Karasuma has lived in the mountains his whole life, but is sent into the city by his father. Of course, he is going to stay in a dojo where 4 girls live. It is pretty amusing most of the time.
Animation:
Animation is done pretty well. It looks good and things seem to fit well.
Sound:
I enjoyed the opening and closing themes.
Characters:
Characters are the usual for something like this. Hardworking older sister who also takes over the role of "mother" to the younger sisters, 2nd sister with an inferiority complex who tries to hide her true feelings, smart/artistic sister who remains aloof and super cute younger sister who is great at housework and cooking. Still they mesh well with each other and with the main male character. Most of the bad characters are very strange or for several of them, don't even make sense.
Overall:
Not bad for harem anime, I would say above average, mostly because I really like Yoichi and the 4 sisters.