Uhm, pretty sure I’ve always been a guy!

But actually, a yamabiko’s personal voice has no effect on their ability to produce echoes!

A yamabiko’s personal voice is just a consequence of their physique, just like any other person’s.

But the ability to manipulate echoes is a magical one!

The yamabiko takes in a sound with their magically precise yamabiko ears, then manipulates the waves of their own shout to take on the same form as the waves of the sound they heard before!

That’s the basic yamabiko skill!

An experienced yamabiko can learn some more complex tricks, like to store a certain number of sounds in their memory, and repeat them from memory at will.

That skill is particularly handy for pranks.