While his parents are away working overseas our protagonist takes this opportunity to visit his childhood friend (and her twin sister). They live with their mother and are located pretty close to the high school he and the twins go to. So, seeing that he'd be living alone otherwise, they decide to have him live with them in the meantime.

There's also a prestigious all-female school nearby; this being the case, several students/teachers live in the same neighborhood as the protagonist's childhood friend; thus the rarely seen male presence begins a bit of an uproar as awkward, hormone-charged interactions begin.

[Edited from White Masq]