Can anyone explain the ending of "Koe no Katachi" one-shot?


In [Koe no Katachi (OOIMA
Yoshitoki)](http://myanimelist.net/manga/48621/Koe_no_Katachi) (one-shot
version), at the end of the story,

> the boy, Ishida Shouya, finally met up again with the deaf girl he bullied
> in the past, Nishimiya, Shouko.

My question is about the exchange in sign language between them in the last 3
pages of the story. What do the signs mean?

> Why did the boy blush and reply "That's so embarrassing! How can you even
> say that?!" in page second to last? And in the last page, when the girl
> grabbed his hand, why did he say "That's not what I meant!"?

The relevant 4 pages. (negative page number, since I am counting from last)

**Page -5** [![Page
-5](https://i.stack.imgur.com/wNkhB.jpg)](https://i.stack.imgur.com/wNkhB.jpg)

**Page -3** [![Page
-3](https://i.stack.imgur.com/Ka5Xj.jpg)](https://i.stack.imgur.com/Ka5Xj.jpg)

**Page -2** [![Page
-2](https://i.stack.imgur.com/F6Ejp.jpg)](https://i.stack.imgur.com/F6Ejp.jpg)

**Page -1** [![Page
-1](https://i.stack.imgur.com/SXyvW.jpg)](https://i.stack.imgur.com/SXyvW.jpg)




It says "you-me-friend" in JSL. The pronouns appear to be the same as ASL,
(finger pointing at the relevant person stands in for you/me/he/she/it) and
clasped hands by context appears to mean friend. In ASL, it would be hooked
index fingers & clasped hands means "to congratulate".

I didn't see any other panels with likely sign in them. On an unrelated side
note, JSL is distinctive for it's usage of air-writing, where some signs like
place names are the Kanji written in the air with your finger.

