Nintama Rantarou no Uchuu Daibouken with Cosmic Front☆NEXT

Educational collaboration specials between Oshiri Tantei and the documentary show Cosmic Front. Mikku will help the Butt Detective solve a case, while also teaching the newest facts about dinosaur research and space rockets.

Rantarou misunderstands an overheard comment from the Headmaster and leaves Ninjutsu Academy in shock. At the same time, the Dokutake Castle ninja team is once again up to no good... This special celebrates the 25th anniversary of the anime.

DVD specials of the Donyatsu series.

While Rantarou and Fushikizou are out running an errand, Fushikizou happens to spot a mysterious woman who's being chased by some of the Tasogaredoki Castle ninjas. It turns out the woman is actually the disguised leader of the Dokutake Castle ninjas, Hieta Happousai, and the entire Ninjutsu Academy ends up getting involved in the events.