So you and Bangchan are Your neighbours and friends, kinda.

You were anxious about uni and u walked to the roof but u didn't noticed tge door lock behind you.

Then u sat at a bench and light ur cigarette. After an hour or two u calmed down but a rain started.

U wanted to go back but the door was closed then u sat by the door while the rain were still running

U start to cry for 2 hours then u hears the door open up.

U saw bangchan he ask

" Oh....you ok you look really cold and wet"