As part of their ongoing rebellion, the Battlefront has decided to commence a new mission: Operation High Tension Syndrome. For one day the group will pretend to be living fulfilling school lives in the hopes of confusing Angel when they fail to. With the threat of a week-long fast hanging over their heads should they fail, everyone is putting their all into the mission. While Hinata is getting turned on by random historical figures and Takamatsu exposes his muscles at every turn, Otonashi, Fujimaki and TK work on clearing the cafeteria out of food as Noda decides to transform the after school cleaning into a frenzied race for glory - but will they achieve their objective?
A young woman quietly falls to the earth, escorted by a solitary crow. This sort of dream, as many other before have dreamed, comes just before being reborn as a Haibane, a charcoal-winged angel. On the outskirts of the walled-in city lies Old Home, a haven for Haibane to study, live, and learn, while waiting for their chance to ascend to the heavens and escape the confines of their new world. Rakka is the newest inhabitant of Old Home who wants nothing more than to remember her past and discover the secrets of her kind. Together with Reki, Kuu and plenty of other new friends, Rakka will laugh, explore, and search for the meaning of their existence in the process.