As they're looking at the building for one last time... Toki was staring at it for minutes.

"..."
"Something wrong?"
"N-no. I was just wondering how long I was living in that place."
"You don't remember? Then it's gotta be very long time then."
"I don't know. It's all so fuzzy in my head. I don't know why."
"Don't worry. it doesn't matter now. let's move on. shall we?"
"Oh yeah."
(It's probably for the better for us anyways.)