One of the earliest manga i bought when i started my passion for manga and anime in the early 2000s, it's a very fun comic about a generic (and pretty perverted, like Ataru from Uruseiyatsura) teen guy that one day founds at home a cute girl named Nana, but Nana in reality is a cyborg create by his father. Funny stories and spicy jokes awaits the duo that will be followed by 2 other cyborg girls and more characters. The story is pretty Classic type of "Ecchi" comedy and i seen this type of stories other times, but nonetheless it was written in a funny andenjoyable way. Characters are well realized with their own quirks and emotions.
The art design is truly lovely to watch, i like this silly style and fits well the type of story that is presented.
Overall, a fun manga from what i recall, i think other people will enjoy this.