i see it as...ayu has alot of problems and if she doesn't look after it they'll go worst(kaboom explosion)
at the end everything is back to normal because it hasn't happen yet and it will if
ayu ignores it.
also about the kid and the car...i think that could means
like asongforxx mention ayu have to ability to help others but not herself and she can't help herself because no one is around to give her a hand....
this pv got some really good concept and original too
description from yesasia:
is this love lyrics describe the sorrow feelings of liking him but he got a girlfriend already(unstopable missing of someone)
step you lyrics describe the mind of a in love woman and hoping for more of it (player maybe?)