In the near future after the crisis of human extinction <Great Calamity>, a high school girl named Toan feels suffocated in a society where biocentrism has been established and excessive harmony is valued. One day, she is approached by a girl named Miaha, who is considered an oddball in her class. Initially bewildered by Miaha's outspoken negativity towards society, Toan gradually finds herself drawn to her. Eventually, along with another friend, Kian, they are led by Miaha to attempt a collective suicide... This is a comic adaptation linked to the "Project Itoh," which is a theatrical animation of the works of the late SF writer Keikaku Ito, who passed away at the young age of 34. The acclaimed novel "Harmony" by Keikaku Ito is challenged by the manga artist Ayaka Misaka. This edition has been significantly expanded from its serialization in "Monthly Newtype," and is finally being published as a long-awaited volume!