A virus researcher was reincarnated into another world...as the virus itself? The virus holds incredible power, but its transmission may just be a matter of life or death!
Our protagonist started out infecting a rat and has now infected a hobgoblin. Pretending to be a human, he goes into the city, but immediately gets caught up in some trouble and unexpectedly ends up playing an active role! In the meantime, he forms a party with Elena, who he met again, and starts being an adventurer…?!