The question we all had when we learned that we can't hold on to our memories for more than three months was...

Why didn't we know about it?

But I think the answer was there from the start, it was because we were never bothered to notice it until now.

However, until now, we never once questioned ourselves if there's anything unnatural with our memories.

Forget that! Fact is, we're still going to forget all about this after three months, aren't we?

That's right.

But then, why have I never forgotten what you look like?

The diary says,

The more often you see a someone's face, the more opportunities you will have to recognize that face.

That's why, we need to confirm that fact by creating opportunities for recognition several times a day.

Just like what Jun'you said, we should have been aware of that... yet, we still forgot about it. So to avoid forgetting, it is necessary for us to be able to recognize things more regularly.

So we just need to have something we can possibly recognize...

Yes, you just need to be able to recognize that something.

But can you remember even the position of the mole on my neck "without looking at me" ?

For example, people's faces.

Yesterday lunch.

The feelings of joy and sorrow.

The beating of your heart when you are excited or agitated.

Those are the kind of things that is nearly impossible to recall all over again every time.

The irritation and anxiety you had when you first learned of the fact that you can't hold on to your memories for more than three months will fade over time.

They will no longer seem important once you have forgotten about them.

And in the end, you will completely forget everything.