I think it looked something like this.

[ there's an edge to his voice at the sudden lighting in the room they'd just left... Kazuki still not feeling really great about this anymore. Can this freaking ghost chill already? He reaches out to grab on to Rei's coat again. ]

The window upstairs was a little warped so I'm not totally sure, but... it makes the most sense.

[ speaking of upstairs, Kazuki glances at the stairwell nearby, the shadows from the flickering lights make it less and less appealing to climb. ]