"Discovered"

To approach the altar suspended in the air surrounded by countless battle angels, the demons had to use their wings to fly, and it was…inconvenient. 

This is the difficult part. 

After all, even if the demons were invisible using some tricks, if someone touched them, they would also touch something but they would see nothing. 

It would be bad if the demons accidentally bumped into the battle angels because of their wings and so, it was the evil spirits' turn to approach the altar. 

In this way, as long as the spirits kept their spirit state, they could bypass the battle angels as if they were ghosts. 

At the same time, the demon team was also not idle, and they spread around the temple, approaching people here and there just like what Ainsley asked them to do. 

Of course, Ainsley took the chance to use the demon team's bodies as the virus carrier and spread the virus to these battle angels one by one.