Help: Looking for Asian short film

Hey guys,

So, I asked about this on the need to know board, but no luck.

I am looking for an Asian short film about two boys walking around a school at night. One of the boys is photographing the school when the other finds him and asks to join. They walk around the school and talk about various things (I can not remember those details.) At the end of the film the boys say goodbye to each other. The boy who was not taking pictures boards a bus. As the bus is driving away he writes his number on the window using the condensation.

Those are most of the details I can remember. Also, I am pretty positive that it is either Thai or South Korean; but I could be wrong.

This has been bothering me for several months now, so any help would be greatly appreciated!