Genre Ecchi
A letter arrives at Death Cram School. Inside is a an invitation to a spa resort. Yumi declares to the four excited girls that, "No. This is evil itself," points out that they are slacking off too much. Shiki proposes, "When opinions are divided, it's time for boob rock-paper-scissors!" and then wins so they all go to the pool. There, girls from Hanzoo Academy, Homura Crimson Squad, and Hebijo Clandestine Girls' Academy also come, but Asuka says, "Let's have fun together today" and they call a temporary truce. However, a trivial matter sets off a sour quarrel and, at Yumi's suggestion, they settle it with a showdown in the style of the ancient shinobi.
OVA
Unaired episodes included with the Blu-ray and DVD release of Nanatsu no Bitoku.
Special
Mysteriously teleported from Earth, Kenshi Masaki finds himself ensnared by a mysterious organization in a world called Geminar, where male mecha pilots are extremely rare. With the promise of returning home, the 15 year-old agrees to pilot a mecha suit called a Sacred Mechanoid and assassinate the ruler of the Shtrayu Empire, Lashara Earth XVIII. However, things do not go according to plan, and Kenshi finds himself prisoner and an object of scrutiny by Lashara and her shipmates. After learning of Kenshi’s plight, Lashara offers him the chance to redeem himself by entering her employ. He will act as her servant, practically a slave, but also have a chance to once more pilot a mecha suit. Kenshi is willing to endure Geminar’s eccentricities if it means he may return home, but will he ever be able to do so? And what of this mysterious organization that brought him to Geminar to try to kill Lashara?
OVA
Mikami Inaba was fighting a person from another school on her school's rooftop. As they fought, her friend Haru appeared. Seeing Mikami distracted, the man charged at her, causing both of them to break the nearby rabbit cages & fall off the roof. As Mikami fell, she desperately grabbed the rabbit. Suddenly, a flash or pink light appeared. Mikami fused with the rabbit, and gained another personality, called Mimika. Now, Mikami only appears when various people threaten her and her friends. Otherwise, she takes on the form of Mimika.
OVA
