Shino and Kaneki were talking it ended with Shino reminding Kaneki of his past which had hurt him.
She knew she had hurt him again but she wanted to mend her relationship with her childhood friend and when she said "no matter what we'll always be friends" he saw a face that he longed forgot.
Kaneki: S-Shita-chan?
Inside Kaneki's head*
(This isn't good we're starting to remember!)
Shino:... So what do you say?
Kaneki: A.. a.. a...
(I take control again you pathe-)
Kaneki: g-give me t-t-t-time to t-t-t-think.
Shino: I will, I'll wait as long as you want.
Kaneki's thoughts*
(I'm in control again finally... But i think I need to do another seal so my body won't do that again.)
Kaneki: I'm gonna go pee I'll be right back...
Shino: yeah... Sure.
Kaneki went a bit far from camp and.
Kaneki: there we go no one near. !laes noitomE .snoitome nwo ym ecifircas tsum I ssenippah rieht tcetorp oT
The sealing curse he made was casted to himself but.
Crack!
Kaneki: of course I can only have 1 seal for this heart... So there's no other way but to just ignore her now? Why? Why did i remember? I'll only cause more trouble for her. What do i do?
After a few minutes he did return to his seat.
Shino: hey Higanbana-kun! Look! I caught 2 more fish while you were gone! We're in the lead!
Kaneki:...
Shino: Higanbana-kun?
Kaneki sat down without saying a word.
Shino's thoughts*
(Looks like I've hurt him again... What can I do now? And it doesn't look like he wants to talk now!!! What to do I do?!)
Kaneki: sorry but I'm not in the mood to talk right now.
Shino: oh.. sure...
They didn't talk for the rest of the 3 hours remaining.