Since it could never be known that Karizen was here right now, the Demon Lord continued to conceal his presence.
He had decided to remain invisible to this little girl but soon changed his mind.
He was using his precious vessel today and decided to make it known to the others.
Until now, he had concealed his presence which implied that even if someone were to look his way, they would not be able to see him.
This was the same principle that Neo had used to conceal his presence.
However, there was a difference in what the two immortal beings were doing.
Neo had to only concern himself about being visible to this child.
After all, Yether, his disciple, was making sure that his Master's presence was neither felt nor seen on a large scale.
Implying that no one, including Asmodeus, could sense neither his or his Master's aura anywhere near this world.
Don't take it, Hilda!