Virus Tensei kara Hajimaru Isekai Kansen Monogatari

I was run over by a truck and died, so for some reason, I got to decide which race to reincarnate as via roulette. What the roulette chose was...a virus!? Seen off by a beautiful, easygoing goddess, I was sent to another world.

"As expected, a virus is too meaningless. There were dragons and the like among different races..."

I was depressed, but I soon noticed the cheat ability. Free possession. Copy skills that you can get every time you are infected. An almost infinite stock of life. Self-modification and weakening the enemy. Having become an immortal virus, I decided to enjoy a new life in a different world.

(Source: Shousetsuka ni Narou, translated)