Sanae, what's that shaking noise?

It's a bone-conduction headphone, they tend to leak sound you know...

Bone conduction?

Bone conduction bypasses the eardrums by using the skull's vibrations to send sound directly to the brain. Want to try it?

No, no...

It's not telepathy, that's impossible...

Directly into the head? How ridiculous...

Famichiki, please...

This does go right into the head...!?