This OVA is divided into two parts. First one is about Torii Shoutarou following his younger sister on a date. Second one is about Christmas Eve, which Mitsuki, Yuuya and their friends spend at Kanzaki's house. Bundled with the limited-edition volume 7 of the manga. (Source: AniDB)

Takashi Kamiyama is your typical mild-mannered high school student—polite, aloof, and pacifistic, with a slightly above-average IQ. But would your average high school student really enroll himself at the infamous Cromartie High School, known as a breeding ground for the toughest delinquents out there? Apparently so, as that is exactly what Takashi does, though for reasons he'd rather leave unmentioned. However, one thing is for sure: the "hard-boiled rabbit in a den full of hungry lions" is never going to have another dull day. And how could he, now that he's surrounded by mohawked punks, obnoxious robots, and... gorillas? And was that Freddie Mercury riding a horse down the corridor? Follow Takashi as he earnestly dedicates his new high school life to better his school's reputation while his classmates are hellbent on wreaking havoc.

The Straw Hat Pirates, searching for the great passage "Grand Line", are in trouble when their food runs out! Luffy, searching for food on his own, finds a ship belonging to the pirate, Gary, and takes it over!! He lands at a nearby town... Luffy was attacked by a young girl, Silk, who mistook him for a member of the other pirate gang. As the two eat a meal, they tell their stories. Meanwhile, Gary and his band are burning with anger at Luffy, demanding payment from the town's defenseless citizens...!! (Source: jumpland.com/animetour/op/index_en.html)

Magician's Academy revolves around Takuto Hasegawa, who attends a magic academy that is not marked on any map. During a summoning spell exam, he accidentally creates a girl named Tanarotte, who happens to hold enough magical power to destroy his country, but fortunately Tanarotte professes undying loyalty (and love) to her "creator." (Source: ANN)