Here’s what Neurowear.net had to say for themselves:
“People think that our body has limitation,
however just imagine if we have organs that doesn’t exist,
moreover we can control that new body?
We created new human’s organs that use brain wave sensor.
…If people show their feeling even they don’t express,
what differences will be happened?
Interesting? Ashamed? Scared?
In the beginning, people may feel strange,however people are getting accustomed to control their new ears by brain waves
if they keep using. At this moment, 「necomimi」can be part of your body.“
Thanks to small sister for bringing these to my attention.