Hibiki was on the rusty balcony of one of the abandoned houses in Tokyo, like all of them now after the bubbles happened. He was there with his headphones that he always wears while looking at the horizon. So you wanted to try to scare him by approaching him from behind walking on tiptoe in silence.

"..Even if I don't look at you and I have headphones on, it doesn't mean I don't know you're here." He always says looking forward.