I! Use a Virus to Destroy and Save the World

After grabbing a late-night snack, Li Jun transmigrated to a world called Battle Star. Once he understood what this world was like, he fell into despair. Just as Li Jun was sinking into hopelessness, a voice rang out in his mind.

Ding... All-Purpose Virus System activated. Your journey through the apocalypse begins now.

Ding... Congratulations, Host. You have received one dose of the T-q virus source.

Ding... Congratulations on destroying an entire nation. Reward: one dose of the T-q evolutionary virus source.

Ding... Congratulations on destroying and saving a world. Reward for the Host: ...

How will Li Jun use viruses to destroy the world and save it?

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.