Virus Tensei kara Hajimaru Isekai Kansen Monogatari
It's That Reincarnated-as-a-Virus Story / The Otherworldly Infection Story that Started with a Virus Reincarnation / ウイルス転生から始まる異世界感染物語 / 异世界病毒转生物语,
Ongoing Released: 2020
After dying, the protagonist awakens in another world as an infection inside a rat. Rather than returning as a person, they have become a virus that can spread from one host to another. Each time the virus infects someone, it gains more bodies and abilities. With this power, the protagonist sets out to cause a pandemic in the new world.