[ Sasuke, you are an insufferable know-it-all. But Hong Kong is a very patient guy, so you're both in luck. ]

Okay, Sasuke, I'll go grab the notebook and you can practice whatever new words you wanna add to the list. [ Then, he turns to Shizuo. ] And I'll bring back a book for you too.

[ He says all of this in English, slowly. Looks between the two of them. ]

I'm only gonna be gone a minute, okay?

[ Read: do not kill each other in my absence. ]