Hana Yayoi (Takajo Aki) is a descendant of special family which has super human knowledge, good at information war. She has keen powers of observation to see through people's secret, and her twin brother (cast by Former D-BOYS member Endo Yuya) has over 180 IQ.
Aki who has no memory of her true past, and was brought up as "special guard official" is ordered by senior officer Takagi to guard Shiro. Aki and Shiro make their way to the save point "designation point." It should have been simple duty, but they are raided by pursuer Asahi. A big secret was hidden about this assignment, and Aki's past. --tv tokyo--
The story continues in the next school year after the events of the last season. The new members of Rappappa now face a even greater threat from within their own school and the surrounding schools.
Two transfer students, Atsuko Maeda and Onizuka Daruma came at the all-girls school Majisuka Gakuen. In this school violence and fighting are common among the Yankee students. Noisy and trouble maker Daruma made a fuss as soon as she entered the school, win in her first fight but then was beaten easily by another gang shortly after. In contrary to Daruma's bold-but-powerless attitude, Maeda who is truthfully a strong girl despite of her silent nature found Daruma is beaten by Team Hormon before her. The word "Majisuka?" (means are you serious?) instantly awaken her true nature and made her won the battle against Daruma's attackers easily, thus made a big fuss at the school and the news even reached the strongest fighting group, Rappapa. Afterwards, Daruma acknowledged Maeda as her boss and as a result the friendship between the two girls began to grow along with their fights with fellow students at their school.