This story has a touch of Murakami (of the Haruki variety) about it... the usual routine of everyday life in Japan suddenly interrupted in an unexpected way, and then everything goes back to normal again.

I recall an experience when walking through the streets of Tokyo at night (unfortunately too close to the red light districts) and seeing a woman screaming and bursting out from nowhere, and then seconds later a man comes running after her. Everyone stares and follows the pursuit until they disappear from sight, and I pick up a small metal object in the shape of a tiny birdcage with an even smaller bird inside.

And as sudden as the whole incident took place, the people went back to what they were doing before it all started, but I couldn't help but wonder what happened to the woman and why she had in possession this curious object.