In short, information can be blocked off in an airtight space by obscuring the line between life and death through the creation of superposition.

So projecting your information into another space-time is how ray shifting works.

I already know that.

It can't be done just anywhere.

Eh? It can be done here?

We have to first of all, fill a wash basin with water?

Put your face into the water to block outside information...

If you do your best and hold your breath for 10 seconds, then you can ray shift...

Servants can do 10 seconds and have more to spare!

But... Outside observation must also be blocked off...

Don't be idiots, if we do it here no one will observe us, right?

Let's do this!

Just why does this household have 3 wash basins...?

I can't take my eyes off it...