It's been long since I read it so don't remember many details that could probably affect my rating but I'll go ahead cause I really want to write a review on this.

Story 8/10
It's innovative though not the first one but still pretty different than the rest of the mangas and considering the date when it was written.There were twists and unexpected ones,at least for me they were.Me being a sucker for romantic moments and such this manga just when you thing something is gonna happen,something really does but not what you expected.I found it funny at some points if I remember right.Maybe not something you can laugh your ass off for hours but it does have its moments too.
Well...well,the ending was totally unexpected and a bit of disappointing,but if you reconsider it you'll probably find it funny and memorable,which is always good.Still,it left me expecting more.

Art 9/10
I really enjoy the art of this mangaka.I have to admit that she draws her characters in her own style,which recognizable.They girls are just plain cuties like in Hatsukoi Limited.

Character 7/10
Now I don't remember the characters that well so I might be wrong at this one.I'm not sure whether there was development or not but the characters were nice.I doubt there was anyone annoying the hell out of me,so you'll probably be fine with them.Although I could relate as much,most likely because the manga was short.

Enjoyment 9/10
I personally(like I just said personally)enjoyed a lot it.Don't know about you but I did because of the story,funny situations,ecchiness and could be because of the reason that I was still pretty new to manga when I read it.

Overall 8/10
Again I enjoyed it.I enjoyed the story,the art,the character.I'm actually sure this is pretty underrated compared to other ecchi or harem mangas out there who all follow the same boring story line,boy-meets-girl and falls in love with her BUT only her(now that's what loyalty means).