In the distant future, Kagami Village is a suburban mountain village that has been left behind by the highly developed science and technology in urban areas. "If you're not well behaved, a look-alike will come." Higure Akane, a middle school student living in this village where an old legend still remains, was looking forward to being reunited with her older sister Higure Sui, who has been released from the hospital after a year. However, shortly after her sister's release from the hospital, Akane receives a phone call. "The person in that house is not your older sister."

Alba is reborn as the son of a poor nobleman. He is unable to use magic due to a disease and is destined to have a short life, so he is taken in by the duke's family. There, he meets Orsis, who was his favorite person in a previous life. While this coincidence seems to good to be true, he remembers that he is why his beloved lost his smile, and begins to search for a way to live a long life so that he can continue to love him.

Arne Neuntöte is a vampire detective who manipulates supernatural powers. Lynn Reinweiß is a nobleman's daughter who loves vampires. Their worlds should never have crossed, but they join hands to solve a bloody mystery. In the darkest of nights, Lynn finds herself in desperate need of help. Then she wanders into the mysterious city of "Lügenberg," where non-humans live. Lynn's world changes drastically when she encounters "Arne," a vampire who is called "the worst" in the city. And tonight, a new "murder case" has occurred. What is the truth behind the bizarre incidents that take place in a world where humanity and the bizarre intersect? "Come on, human. You may dance merrily under the crimson moon."

The Animal Liberation Alliance, an eco-terrorist organization, rescues a pregnant chimpanzee from an animal testing lab—only for it to give birth to a half-human, half-chimpanzee "humanzee" named Charlie! Fifteen years later, Charlie's human foster parents are finally ready to send him to a normal high school, where he makes his first friend: a human girl named Lucy. In the meantime, however, the ALA's stance has become ever more extreme, and now they're here to drag Charlie into their terrorist plot...