Gotoubun no Hanayome
A high school romantic comedy with five times the cute girls! A high school boy must work part-time to help five sisters study so they can graduate, but the only thing these quintuplets have in common is that they all hate studying!
Five girls who want to do anything but study, and their tutor: a high school boy who's got book smarts and not much else. Fuutarou Uesugi took the tutoring gig because he was desperate for cash, but when his students—the five beautiful daughters of a wealthy businessman—find five times the excuses to slack off, what can he do?! At this rate, the sisters won’t graduate, so if he wants to get paid, Fuutarou must think of a plan to suit each of them… Which feels hopeless when five out of five of them think he's a loser!
(Source: Kodansha Comics)