That the Abyss had such technology...

It's a system made to pluck information right out of your head.

Indeed.

So in short, we were captured by the Abyss and forced into a nightmare by their devices?

Going by their conversations,

If you get defeated inside the nightmare, your heart will become dominated by terror and despair.

After that, they'd extract information and memories from the depths of your mind to the point where you end up as a drooling vegetable.

So they didn't use that device on you, Asakaze?

They wouldn't have gotten any useful information out of me, see!

Though even if they were to use it on me, I wouldn't lose to the nightmare.

Come now! I shall guide you to the exit! Follow me!

Let's go, Kiyoshii!