![kansen-3-shuto-houkai-1 Kansen 3 - Shuto Houkai 1](https://hanime.su/wp-content/uploads/kansen-3-shuto-houkai-1.jpg)
Four years have passed since the initial outbreak of the Unknown virus epidemic, and the terrifying plague which depopulated the Tohoku region of Japan has been reduced to a mere memory, thanks to drastic quarantine measures coupled with an effective vaccine.