Existence

Existence summary:

One day, it was a herd of ants, and another day, it was a large dinosaur. This was the last reincarnation of a being that had experienced tens of thousands of reincarnations and lives.He was born as a human with the power of every single lifeform he had ever been.Why did he have such an ability? Lee Jain finally came to understand.“I exist to eradicate mankind.”