(He jumps up just the tiniest bit at the fingers - he hasn't seen enough of this side of her not to be surprised. He could swear they were being discreet and even before he can formulate what sort of response he would like to give, Akechi puts him in the spotlight.

Akechi!? He's been quiet! Just! Listening! You were the one being weird, using their terms that mean nothing to nobody else... Ren exhales the tension that had built up in his shoulders when the ball was thrown to him. He taps the table two times as he gathers his thoughts.)

Upstairs was my hideout.

(Which is not as cool as her own - it was literally just his room, but anyways. He decides to let Akechi make the decision on what to share on his end, so he completely erases the idea of them working together in his speech.)

I operated in a reality made of the collective unconcious. It responds to people's cognitive impressions, so we thought this place was similar.

(Does it make sense? Probably... Not. He'll know soon enough if she has any questions about it.)