Void creatures might have been designed for bringing destruction to reality, but that did not mean they were suicidal. Even so, they would do everything in their power to destroy.
The white void had not just drawn them over. The creatures wanted to know what was causing them extreme unease and danger.
They had realised that the white radiance was deadly to them in ways their natural enemies weren't. However, getting close to that white radiance was easier said than done.
Just getting in close went against their instincts, but it had to be done if they wanted to rid themselves of the unease. At the same time, they couldn't ignore their natural enemies.
So when the radiance and its purifying light disappeared, the void creatures abandoned their fights and went after the being who had suddenly appeared in the heart of the white radiance.
