Some time ago,
'System, activate invisibility shield.'
[ Activating....]
SWISH
Ryuk's body slowly started to become transparent before completely becoming invisible, observing his hands and body parts which appeared nonexistent from his point of view.
He felt satisfied.
Two days ago, he had commanded the system to analyze the way those small army divisions under Regina had used to become invisible, while using mind numbing bracelets in the hands of branch family members to hide their presence.
At that time, a small thought crossed his mind. Normally, he could erase his presence from anyone using his ability, but what if he could make himself physically invisible too?
Any being could only find anything by sensing its presence in case if they can't see it, but his ability nullified every energy falling on his body directly, making him part of the surrounding.