Nozomu Itoshiki is still the bizarre teacher of the even stranger Class 2-F. He attempts to teach his students the negative aspects of the world and society, only to have each circumstance thrown at his face whenever he tries. With more students and friends than before, Zetsubo-sensei's life becomes harder and crazier than ever before. (Source: ANN)

A new Sayonara Zetsubou Sensei OVA.

Following his brave sacrifice in the war against Albion, Saito Hiraga is knighted and treated as an aristocrat, something that proves difficult for Louise Françoise Le Blanc de La Vallière. With their relationship no longer defined as the mighty Void mage and clueless familiar, she wonders what exactly this means for them. While venturing to a castle, Louise is ambushed by a powerful mage named Sheffield. Battling alone, the young mage nearly faces defeat until Saito makes his appearance. The mystical and unknown nature of Void magic seems to be at work in the battle, and Louise begins to believe in the possibility of another Void user. Moreover, she realizes that Saito's magical rune is fading, and so a new adventure begins as they search for the elf who revived Saito in the past. The relationship between former master and servant faces a new challenge as they work to restore the runes and redefine the bond which holds them together.

Picture Drama episodes included in each DVD volumes of Zero no Tsukaima: Princesses no Rondo. Episode Titles: vol.1 「Maid's Afternoon: Whip of Love」(メイドの午後　愛のムチ編) vol.2 「Maid's Afternoon: Afternoon for Two」(メイドの午後　二人きりの昼下がり編) vol.3 「Maid's Afternoon: The Last Night」 (メイドの午後　最後の夜編) vol.4 「Countess Butterfly's Graceful Day」 Prologue (バタフライ伯爵夫人の優雅な一日 序章) vol.5 「Countess Butterfly's Graceful Day」 Chapter 1 (バタフライ伯爵夫人の優雅な一日 第1章) vol.6 「Countess Butterfly's Graceful Day」 Chapter 2 (バタフライ伯爵夫人の優雅な一日 第2章) vol.7 「Countess Butterfly's Graceful Day」 The Last Chapter (バタフライ伯爵夫人の優雅な一日 最終章)