Katou Kiri has become Tsubaki's loyal retainer, but will the young ninja learn to work together with his other Student Council colleagues in order to build a better academy? Then, the Sket-dan teams up with the Student Council to cure Usami of her hatred for all men... and it involves more than one kind of cross-dressing...
but now that I have a master, 
I feel pride in being a ninja!
ahora que tengo un amo, ¡he llegado 
a sentir orgulloso de ser un ninja!
mas agora que tenho um mestre, 
sinto orgulho em ser um ninja!