kansen 3 Shuto Houkai Episode 1

It's been four years since the Unknown virus first ravaged the Tohoku region of Japan, turning it into a ghost town. Thanks to strict quarantine measures and a breakthrough vaccine, the nightmare seemed to be over—just a haunting memory. But don't be fooled; the Unknown virus is far from extinct. Soon, Wataru Ayase and his loved ones will find themselves plunged into a living hell. Their once-vibrant home city, Tokyo, will transform into a nightmarish trap from which there's no escape...