I had a question about the Firearms method.

[私はあなたと一緒に飛びます]

A while back I read that you needed to (ideally) aim for the brainstem to ensure a almost instantaneous CTB, and I read it was right behind the ears.
I did some feeling around, and right below the ears is a slight indentation, is this where I need to aim, or is it literally right behind the ear?
Sorry if it seems so simple, when shit goes down so to speak, I want to make sure that everything is correct and nothing is left to chance.
Anyway, thanks for reading gents, I do appreciate it!

 

[TiredHorse]

That depression is where I intend to place the muzzle. However, you also need to be certain of your aim up/down and front/back. It's easy to aim too high or too far forward. You should be aiming pretty much straight at the same depression on the other side of your head, or perhaps a little bit behind it. Practice in the mirror.