Read or Die takes place in an alternate history world where the British Empire has remained a major superpower. The Empire's continued existence is guaranteed by the British Library, an external intelligence agency working within the actual British Library and its Special Operations Division (the British Secret Intelligence Service, more widely known as MI6) is also often mentioned, despite Kurata's editors (erroneously) telling him it no longer existed.... more>>

The series follows Yomiko Readman, also known as "The Paper", a superhuman agent of the Library's Special Operations (possessing a "double 0" certification that denotes a "license to kill", as in the James Bond series, although she rarely invokes it). In both the novels and manga, her adventures alternate between doing missions for the British Library and helping young novelist Nenene Sumiregawa.

Only the first novel and first manga have similar stories, involving rescuing Nenene Sumiregawa from a vicious kidnapper. Otherwise, the novels, manga, and animated versions of the stories have divergent plotlines. While characterizations are usually consistent even when storylines are not, some characters have different origins in different versions of the story, or do not appear at all. Still, it's mostly an ongoing story told through different media from the novels to the animated series so far. <<less

Please Twins! is a story mainly revolving around three high school students: Maiku Kamishiro, Karen Onodera, and Miina Miyafuji. The three were drawn together by a photograph of their childhood home which later makes all of them seek out the house in the picture. However, the picture only has two children - a boy and a girl. Hence, only one of the girls, Karen or Miina, is related to Maiku. The only other identifying feature of the pair in the picture is that the boy and the girl have eyes of the same color; a feature that furthers the ambiguity as all three of them have the same eye color.... more>>

The main concern of the male lead, Maiku, is that he is in love with both of the girls. In addition, the two girls are in love with Maiku, forming a love triangle of potential in*est. The three main characters, mostly the two female leads, are in a predicament of wanting to discover their past versus the risk of losing a romantic relationship. <<less