"Mn." A little sound of agreement was all Sai had to respond to that. He was silent for a few moments after, just keeping the pace alongside Gin with an expression of subtle bafflement (which for him was really just a crease in the eyebrows).

"Has it... ever happened to you?" he asked suddenly, turning his gaze back to the other man. He knew Gin had been in the institute a little longer than he had, but he didn't know what the chances would be of them sharing such an experience.