The story of Pupa is about two teenagers, Utsutsu and his little sister Yume. Their father was an extremely abusive man, beating their mother and then his children after he was fired from his job. After a divorce, their mother began dating another man, and the father left the two kids alone. Now orphaned, Utsutsu promised himself that he would always protect Yume. After seeing red butterflies, these two siblings become infected with a virus known as Pupa. This virus mutates organisms into insatiable monsters, only seeking to feed on any sort of life. Yume succumbs to the full effects of the Pupa virus, but reverts into a human. Utsutsu, instead of turning into a monster, gains regenerative powers. In order for the virus to be suppressed in Yume, Utsutsu must take a drug and have Yume feed on his flesh. The story is horror based and drama as well. Utsutsu begins to develop a sister-complex of sort’s where he deeply cares for his sister. The story was ongoing up until 2013 and is an anime that ended in March of 2014. As a result, cosplayshopper has provided you as cosplayers the opportunity to cosplay as one of the characters from this dark manga/anime.