The fourth season of FLCL, and sequel to FLCL Alternative. It centers on three teenagers who graduated and have started working. The CGI anime will have a theme of the feeling of being an adult.

A long time ago, there existed a Demon Lord who terrorized throughout the world until a Hero stepped up to the stage and challenged the Demon Lord, ultimately defeating him and ending his reign. The Hero then created Rosewood Academy, an academy made to help heroes-in-training achieve supremacy and help defend the world when needed that enrolls only the best of the best. Enter Arnest Flaming, a girl with a high sense of duty and the top student at the academy, hence receiving the alias "Empress of Flames" who one day encounters the lively, carefree new transfer student Blade, a boy who seems to equal her in power, something that she finds really irritating. Arnest was then personally requested by The King to supervise, and show Blade around the academy during his stay. The story follows the students' struggles in their quest to become heroes.

Toei Animation released a new 3D anime short at events starting December 1, 2011. The short run about 12 minutes long and played at stereoscopic 3D theaters at Aichi Prefecture's Lagunasia theme park, Nagasaki Prefecture's Huis Ten Bosch theme park, Kanagawa Prefecture's Yokohama Landmark Tower, and Hiroshima Prefecture's NTT CRED Hall. (Source: ANN)

Second season of .