The story revolves around Taiga who doesn't have memories from more than two years ago after his parents died in an accident. He lives with his sister, Tsubame, who he finds out is from outer space with the job of protecting him as he posses the Origin Heart.

Vandread Special Stage collects together several humorous side stories, as well as a final story arc where the Nirvana meets up with the rest of the Mejere pirates, so Hibiki must go in disguise...
(Source: MangaUpdates)

Nanami transfers to St. Mary Bell High School from America as she looks for her childhood friend, Kotarou. In a school where the ratio of male students to female students is 1:20 respectively, Nanami gets involved in a conflict with a male student who is almost twice her size. As Nanami was about to engage in battle, she catches a glimpse of Kotarou and stops, allowing the male student to grab hold of her! How will she get out of this situation?

After the woman he loves, Erika, dies of an illness, Jeanie sees no reason to keep on living. He used to be an artist who painted beautiful blue skies, but now he hasn't even got the desire to do that anymore.
One day, a strange girl called Coppelia comes into his life. Is she a shinigami, finally come to lead him to his beloved Erika in the afterlife? Or is she something more sinister, a dangerous marionette who has her own reasons for seeking his life?
(Source: MangaHelpers)