[Simon found himself edging towards the door as Kazahana and her friend spoke, now that she'd affirmed that it was alright for him to stay. He wasn't happy that she was getting upset when she needed to relax more than anything, but he had an inkling that he wasn't going to make either of them budge.]

Should I leave-?

[His question was a little weak, and he fell silent as they spoke, resorting to his usual nervous habit of sticking a finger in his mouth, biting down softly. He felt awkward all of a sudden and was relieved when he heard a voice out in the hallway, which he was pretty sure was Koi- or the voice of the body he was trapped in anyway.]

Dad! I-

[Simon fell silent along with the others, shocked at the unexpected reaction, fear from Kazahana and anger from her friend- and then he recoiled, hit by a sudden wave of slight nausea. Through it, he knew he had to do SOMETHING. He protectively stood in front of Koi, his confusion and frustration and tiredness making his voice loud, sharp and angry.]

SETTLE DOWN. ALL OF YOU. This is Koi. He's trapped in somebody else's body, remember? ... I don't know what's going on here, but he's not going to hurt either of you.