So you were doing such research.

As for why they would lose those memories, even with our organization's research we still know nothing about it.

It was quite a long time ago, though. I don't have anything to do with it.

Though it seems like the research was halted now...

Putting that aside, in other words, it means that sensations like habits or customs would be easy to remain?

That would mean so.

Well, it's just a theory, though.

Sensation, is it...

Ah

...Come to think of it, that girl...

She said that she『can hear a sound』... That it's a pleasant sound...