Are you unable to use context clues? It's the person that he's with.

( he sighs, sitting down in the corner because listen... he thought rokkun would be normal and walk in, now they're playing some sort of game. )

I wouldn't have agreed to come here if that's the case... ( you know, he forgot he had to give his hand for this, so maybe this is a little stressful for rokkun. he'll be okay. )

Acknowledge the younger party, and listen to the things that they say... maybe Amami-kun will... ah!

( opens pda, click click click.

@ r.amami
Everything you say is vital, and so are their responses. We're close by when you go to the rooftop! )