"Indeed," he agrees. Besides, Iseul doesn't know any other creatures in the same league as Vena and certainly none who struggle with passive abilities that affect those around them. Perhaps Vena would like to see what a shopping center is like without all eyes turning his way. Perhaps he wants to sit in a darkened cinema without those around him trying to get his attention. Why would he want to? Iseul doesn't know nor does he care as these thoughts are all hypotheticals. What isn't hypothetical is that his charm works and Vena is the only one he knows who could use such a thing.

"Should you ever feel it is losing efficacy, please let me know. I will adjust it should the need arise." It shouldn't, but there's never any guarantee it will retain its potency as centuries bleed into millennia.