After the 12th episode of The Quintessential Quintuplets Season 2, it was announced the TV anime series is receiving a sequel. Details on whether it is a TV anime series or movie has yet to be revealed.
Bibury Animation Studio is in charge of the anime adaptation. The anime is directed by Kaori with series composition by Keiichiro Ochi. The manga is written by Negi Haruba.
Crunchyroll describes the series as:
Uesugi Fuutarou, a high school second-year from a poor family, receives a highly appealing offer to work part-time as a tutor… but his students turn out to be girls from his own class! What’s more, they’re quintuplets… and all five are beautiful, but happen to be problem students who have borderline grades and hate studying! Looks like his first assignment will be to win all the sisters’ trust?! Every day is a wild party in this rom-com centering around the quintuplet sisters of the Nakano household!
Source: The Quintessential Quintuplets official Twitter