Futaro, a gifted but lonely and tortured high-school student, is given a very lucrative assignment: he has to tutor a rich girl from the Nakano family... but things get complicated when she turns out to be five twin sisters, quintuplets. And since none of them wants to study, it's the start of a comic and romantic adventure that has become a hit in manga and anime.

Who are the quintuplets?

Let's start by answering that question. Futaro has to teach five identical girls, but the story is all about their different personalities. Indeed, the only thing they have in common is a complete lack of interest in studying, which translates into catastrophic grades. It's Futaro's job to help them improve their grades... if they're willing!

In the manga, each of the sisters is colour-coded (including their hair) and given a number. So it's by their number that we're going to introduce them: